Vulnerability-Lookup

BDU:2026-07421 (CVE-2026-2340)

Vulnerability from fstec – Published: 2026-05-28 – Updated: 2026-08-31 – View on bdu.fstec.ru Exploit publicly available Fixed

Title

Уязвимость модуля vfs_worm программного обеспечения Samba, позволяющая нарушителю изменить произвольные файлы

Summary

Уязвимость модуля vfs_worm программного обеспечения Samba связана с некорректной обработкой недостаточных разрешений или привилегий. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, изменить произвольные файлы

Severity

7.5 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:P/I:P/A:P

7.3 (High) CVSS 3.1


                      
                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Class

Architecture vulnerability

Status

Confirmed by the vendor

Exploitation

Authorization bypass

Incidents

Being clarified

Remediation

Software update

CWE

CWE-280 - Неправильная обработка недостаточных разрешений или привилегий

Aliases

CVE-2026-2340

References

6 references

URL
https://security-tracker.debian.org/tracker/CVE-2026-2340
https://www.samba.org/samba/security/CVE-2026-2340.html
https://ubuntu.com/security/notices/USN-8306-1
https://access.redhat.com/security/cve/cve-2026-2340
https://lists.samba.org/archive/samba-announce/2026/000724.html
https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17

Impacted products

6 products from 6 vendors

Vendors

Red Hat, Inc., Сообщество свободного программного обеспечения, ООО «РусБИТех-Астра», Canonical Ltd., Samba Team

Products

Red Hat Enterprise Linux, OpenShift Container Platform, Debian GNU/Linux, Astra Linux Special Edition (запись в едином реестре российских программ №369), Ubuntu, Samba

Versions

7 (Red Hat Enterprise Linux), 8 (Red Hat Enterprise Linux), 4 (OpenShift Container Platform), 12 (Debian GNU/Linux), 1.7 (Astra Linux Special Edition), 22.04 LTS (Ubuntu), 9 (Red Hat Enterprise Linux), 24.04 LTS (Ubuntu), 10 (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 25.10 (Ubuntu), 26.04 LTS (Ubuntu), от 4.20 до 4.22.10 (Samba), от 4.20 до 4.23.8 (Samba), от 4.20 до 4.24.3 (Samba)

Product types

Operating system, Application software, Network software

Platforms

Red Hat, Inc. Red Hat Enterprise Linux 7, Inc. Red Hat Enterprise Linux 8, Сообщество свободного программного обеспечения Debian GNU/Linux 12, ООО «РусБИТех-Астра» Astra Linux Special Edition 1.7 (запись в едином реестре российских программ №369), Canonical Ltd. Ubuntu 22.04 LTS, Inc. Red Hat Enterprise Linux 9, Canonical Ltd. Ubuntu 24.04 LTS, Inc. Red Hat Enterprise Linux 10, Сообщество свободного программного обеспечения Debian GNU/Linux 13, Canonical Ltd. Ubuntu 25.10, Canonical Ltd. Ubuntu 26.04 LTS

Mitigations

Использование рекомендаций: Для Samba: https://www.samba.org/samba/security/CVE-2026-2340.html Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-2340 Для Ubuntu: https://ubuntu.com/security/notices/USN-8306-1 Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/cve-2026-2340 Компенсирующие меры: - ограничение прав доступа к существующим объектам файловой системы путем назначения прав "только для чтения"; - обнуление временного интервала модификации файлов в параметре worm:grace_period в конфигурационном файле smb.conf Для ОС Astra Linux: - обновить пакет linux-5.10 до 5.10.254-1.astra1+ci158 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17 - обновить пакет linux-6.1 до 6.1.170-1.astra1+ci5r25 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17 - обновить пакет linux-5.15 до 5.15.0-179.astra2+ci55 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb, Canonical Ltd., Samba Team",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "7 (Red Hat Enterprise Linux), 8 (Red Hat Enterprise Linux), 4 (OpenShift Container Platform), 12 (Debian GNU/Linux), 1.7 (Astra Linux Special Edition), 22.04 LTS (Ubuntu), 9 (Red Hat Enterprise Linux), 24.04 LTS (Ubuntu), 10 (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 25.10 (Ubuntu), 26.04 LTS (Ubuntu), \u043e\u0442 4.20 \u0434\u043e 4.22.10 (Samba), \u043e\u0442 4.20 \u0434\u043e 4.23.8 (Samba), \u043e\u0442 4.20 \u0434\u043e 4.24.3 (Samba)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Samba:\nhttps://www.samba.org/samba/security/CVE-2026-2340.html\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-2340\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/notices/USN-8306-1\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/cve-2026-2340\n\n\u041a\u043e\u043c\u043f\u0435\u043d\u0441\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0440\u044b:\n- \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u043f\u0440\u0430\u0432 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u043c \u043e\u0431\u044a\u0435\u043a\u0442\u0430\u043c \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043f\u0443\u0442\u0435\u043c \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0430\u0432 \"\u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\";\n- \u043e\u0431\u043d\u0443\u043b\u0435\u043d\u0438\u0435 \u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u0432\u0430\u043b\u0430 \u043c\u043e\u0434\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0435 worm:grace_period \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u043c \u0444\u0430\u0439\u043b\u0435 smb.conf\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-5.10 \u0434\u043e 5.10.254-1.astra1+ci158 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.170-1.astra1+ci5r25 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-5.15 \u0434\u043e 5.15.0-179.astra2+ci55 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "26.05.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "31.08.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "28.05.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-07421",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-2340",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Red Hat Enterprise Linux, OpenShift Container Platform, Debian GNU/Linux, Astra Linux Special Edition (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Ubuntu, Samba",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Red Hat, Inc. Red Hat Enterprise Linux 7 , Red Hat, Inc. Red Hat Enterprise Linux 8 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.7  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Canonical Ltd. Ubuntu 22.04 LTS , Red Hat, Inc. Red Hat Enterprise Linux 9 , Canonical Ltd. Ubuntu 24.04 LTS , Red Hat, Inc. Red Hat Enterprise Linux 10 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 13 , Canonical Ltd. Ubuntu 25.10 , Canonical Ltd. Ubuntu 26.04 LTS ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0434\u0443\u043b\u044f vfs_worm \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Samba, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u0444\u0430\u0439\u043b\u044b",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u0430\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u044b\u0445 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u0438\u043b\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 (CWE-280)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0434\u0443\u043b\u044f vfs_worm \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Samba \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u044b\u0445 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u0438\u043b\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u0444\u0430\u0439\u043b\u044b",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://security-tracker.debian.org/tracker/CVE-2026-2340\nhttps://www.samba.org/samba/security/CVE-2026-2340.html\nhttps://ubuntu.com/security/notices/USN-8306-1\nhttps://access.redhat.com/security/cve/cve-2026-2340\nhttps://lists.samba.org/archive/samba-announce/2026/000724.html\nhttps://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0820SE17",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c, \u0421\u0435\u0442\u0435\u0432\u043e\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-280",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,5)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,3)"
}

CVE-2026-2340 (GCVE-0-2026-2340)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:09 – Updated: 2026-09-17 18:40

Title

Samba: vfs_worm does not block directory modification

Summary

A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-29 15:35 UTC

CWE

CWE-280 - Improper Handling of Insufficient Permissions or Privileges

Assigner

redhat redhat root

References

24 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:22644	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22963	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25049	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25979	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28053	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28054	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28055	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28056	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28057	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29863	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56786	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56853	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56911	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57483	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59831	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60019	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:62409	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:62549	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65839	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65851	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65907	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-2340	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2447318	issue-trackingx_refsource_REDHAT
https://bugzilla.samba.org/show_bug.cgi?id=15997

Impacted products

26 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:4.23.5-109.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:4.21.3-114.el10_0.1 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.19.4-16.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::appstream cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:4.15.5-16.el8_6.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:4.15.5-16.el8_6.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:4.17.5-7.el8_8.1 , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/o:redhat:rhel_e4s:8.8::baseos cpe:/o:redhat:rhel_tus:8.8::baseos
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:4.17.5-7.el8_8.1 , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/o:redhat:rhel_e4s:8.8::baseos cpe:/o:redhat:rhel_tus:8.8::baseos
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:4.23.5-10.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::resilientstorage cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:4.17.5-105.el9_2.5 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2::appstream cpe:/a:redhat:rhel_e4s:9.2::resilientstorage cpe:/o:redhat:rhel_e4s:9.2::baseos
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Unaffected: 0:4.19.4-105.el9_4.4 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.4::appstream cpe:/a:redhat:rhel_e4s:9.4::resilientstorage cpe:/o:redhat:rhel_e4s:9.4::baseos
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 0:4.21.3-14.el9_6.1 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6::appstream cpe:/a:redhat:rhel_eus:9.6::crb cpe:/a:redhat:rhel_eus:9.6::resilientstorage cpe:/o:redhat:rhel_eus:9.6::baseos
Red Hat	Red Hat OpenShift Container Platform 4.12	Unaffected: 412.86.202608241157-0 , < * (rpm) cpe:/a:redhat:openshift:4.12::el8
Red Hat	Red Hat OpenShift Container Platform 4.12	Unaffected: 412.86.202609082051-0 , < * (rpm) cpe:/a:redhat:openshift:4.12::el8
Red Hat	Red Hat OpenShift Container Platform 4.13	Unaffected: 413.92.202609080414-0 , < * (rpm) cpe:/a:redhat:openshift:4.13::el9
Red Hat	Red Hat OpenShift Container Platform 4.14	Unaffected: 414.92.202608172040-0 , < * (rpm) cpe:/a:redhat:openshift:4.14::el9
Red Hat	Red Hat OpenShift Container Platform 4.14	Unaffected: 414.92.202609011250-0 , < * (rpm) cpe:/a:redhat:openshift:4.14::el9
Red Hat	Red Hat OpenShift Container Platform 4.15	Unaffected: 415.92.202608180329-0 , < * (rpm) cpe:/a:redhat:openshift:4.15::el9
Red Hat	Red Hat OpenShift Container Platform 4.16	Unaffected: 416.94.202608150307-0 , < * (rpm) cpe:/a:redhat:openshift:4.16::el9
Red Hat	Red Hat OpenShift Container Platform 4.16	Unaffected: 416.94.202609011112-0 , < * (rpm) cpe:/a:redhat:openshift:4.16::el9
Red Hat	Red Hat OpenShift Container Platform 4.17	Unaffected: 417.94.202608250221-0 , < * (rpm) cpe:/a:redhat:openshift:4.17::el9
Red Hat	Red Hat OpenShift Container Platform 4.18	Unaffected: 418.94.202608142238-0 , < * (rpm) cpe:/a:redhat:openshift:4.18::el9
Red Hat	Red Hat OpenShift Container Platform 4.18	Unaffected: 418.94.202609031320-0 , < * (rpm) cpe:/a:redhat:openshift:4.18::el9
Red Hat	Red Hat OpenShift Container Platform 4.19	Unaffected: 4.19.9.6.202606241344-0 , < * (rpm) cpe:/a:redhat:openshift:4.19::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2026-05-27 10:35

Credits

Red Hat would like to thank Pavel Kohout (Aisle Research) for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-2340",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-29T15:35:51.156381Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-29T15:35:58.406Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
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              "status": "unaffected",
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            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux_eus:10.0"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
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              "status": "unaffected",
              "version": "0:4.21.3-114.el10_0.1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
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            "cpe:/a:redhat:enterprise_linux:8::crb",
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          ],
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        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb",
            "cpe:/o:redhat:enterprise_linux:8::baseos"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.19.4-16.el8_10",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/o:redhat:rhel_aus:8.6::baseos",
            "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
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              "status": "unaffected",
              "version": "0:4.15.5-16.el8_6.1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/o:redhat:rhel_aus:8.6::baseos",
            "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
          ],
          "defaultStatus": "affected",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.