CVE-2026-2340 (GCVE-0-2026-2340)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:09 – Updated: 2026-09-14 13:01
VLAI
EPSS
VEX
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)
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
References
21 references
Impacted products
23 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| 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 4.14 |
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 4.19 |
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
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"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T01:46:08Z",
"cve": "CVE-2026-2340",
"id": "CVE-2026-2340",
"initial_release_date": "2026-05-27T02:53:13Z",
"product_status:known_affected": "1390",
"product_status:recommended": "841",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-2340",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-2340.json",
"version": "15"
},
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"dataType": "CVE_RECORD",
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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