CWE-124
Buffer Underwrite ('Buffer Underflow')
The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
CVE-2025-4373 (GCVE-0-2025-4373)
Vulnerability from cvelistv5 – Published: 2025-05-06 14:48 – Updated: 2026-05-12 12:02
VLAI
Title
Glib: buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar
Summary
A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
Severity
4.8 (Medium)
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
15 references
Impacted products
37 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 2.84.2
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:2.80.4-4.el10_0.6 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:2.56.4-166.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support |
Unaffected:
0:2.56.4-8.el8_2.2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:2.56.4-10.el8_4.2 , < *
(rpm)
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos cpe:/o:redhat:rhel_aus:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:2.56.4-10.el8_4.2 , < *
(rpm)
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos cpe:/o:redhat:rhel_aus:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:2.56.4-158.el8_6.2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_tus:8.6::baseos cpe:/o:redhat:rhel_e4s:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
Unaffected:
0:2.56.4-158.el8_6.2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_tus:8.6::baseos cpe:/o:redhat:rhel_e4s:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
Unaffected:
0:2.56.4-158.el8_6.2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.6::baseos cpe:/o:redhat:rhel_tus:8.6::baseos cpe:/o:redhat:rhel_e4s:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:2.56.4-162.el8_8 , < *
(rpm)
cpe:/o:redhat:rhel_tus:8.8::baseos cpe:/o:redhat:rhel_e4s:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:2.56.4-162.el8_8 , < *
(rpm)
cpe:/o:redhat:rhel_tus:8.8::baseos cpe:/o:redhat:rhel_e4s:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:2.68.4-16.el9_6.2 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:2.68.4-16.el9_6.2 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:2.68.4-5.el9_0.2 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:9.0::baseos cpe:/a:redhat:rhel_e4s:9.0::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:2.68.4-7.el9_2.2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2::appstream cpe:/o:redhat:rhel_e4s:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:2.68.4-14.el9_4.3 , < *
(rpm)
cpe:/o:redhat:rhel_eus:9.4::baseos cpe:/a:redhat:rhel_eus:9.4::appstream cpe:/a:redhat:rhel_eus:9.4::crb |
|
| Red Hat | Red Hat Insights proxy 1.5 |
Unaffected:
sha256:e54a5a5f9d69dd6a03e2bcd845e2202910a188d266d4a79b12c387ceffc36f2d , < *
(rpm)
cpe:/a:redhat:insights_proxy:1.5::el9 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:a891aa3f77d70d9d7966dfc71ff9087f45deb95d3025072da96a3ec5220db1f3 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:d9ca4a9ec5bc8de23e4550387f822f19949cdfbc4aeeab20e07b206d92f4a426 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:addf7b49ce99777a3bbf12c2e6678b604f3cfaf91feaaeb4192d75e902e46458 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:d4ef54ac8de0eaf22e294dad8852ea8b5c20f85deb19629a3a4e0020851266c3 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:1c4617b035c66b6b34e9b19f618f72a19da5fce644d79e24eb262f14c848bc81 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:8c5dddd29d08fe8234edbbcda055fe6b0f9a7d7a0edfc3cd130797fdf78cce5c , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:be3feca3b19ac609e5ef829887b6d03ca3c504163ed0f9e10b2410cdfb175b72 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:3d37f30462f237f5087ef8ac90e39f5cd2cbaf5c143f7cae9d6155eb574726f2 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 |
Unaffected:
sha256:8fb68adefecd8ccb94404399ac6c8038c064c85287f4f980a0855da1cbd0dcb7 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.6::el8 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| 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 Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2025-05-06 00:00
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CVE-2025-53101 (GCVE-0-2025-53101)
Vulnerability from cvelistv5 – Published: 2025-07-14 19:51 – Updated: 2025-11-03 18:13
VLAI
Title
ImageMagick has Stack Buffer Overflow in image.c
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to 7.1.2-0 and 6.9.13-26, in ImageMagick's `magick mogrify` command, specifying multiple consecutive `%d` format specifiers in a filename template causes internal pointer arithmetic to generate an address below the beginning of the stack buffer, resulting in a stack overflow through `vsnprintf()`. Versions 7.1.2-0 and 6.9.13-26 fix the issue.
Severity
7.4 (High)
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | x_refsource_CONFIRM |
| https://github.com/ImageMagick/ImageMagick/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
< 7.1.2-0
Affected: < 6.9.13-26 |
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CVE-2025-61690 (GCVE-0-2025-61690)
Vulnerability from cvelistv5 – Published: 2025-10-02 05:51 – Updated: 2025-10-02 17:32
VLAI
Summary
KV STUDIO versions 12.23 and prior contain a buffer underflow vulnerability. If the product uses a specially crafted file, arbitrary code may be executed on the affected product.
Severity
CWE
- CWE-124 - Buffer underwrite ('Buffer underflow')
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| KEYENCE CORPORATION | KV STUDIO |
Affected:
12.23 and prior
|
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CVE-2025-61915 (GCVE-0-2025-61915)
Vulnerability from cvelistv5 – Published: 2025-11-29 02:15 – Updated: 2025-12-03 15:52
VLAI
Title
OpenPrinting CUPS vulnerable to stack based out-of-bound write
Summary
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to version 2.4.15, a user in the lpadmin group can use the cups web ui to change the config and insert a malicious line. Then the cupsd process which runs as root will parse the new config and cause an out-of-bound write. This issue has been patched in version 2.4.15.
Severity
6 (Medium)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/OpenPrinting/cups/security/adv… | x_refsource_CONFIRM |
| https://github.com/OpenPrinting/cups/commit/db8d5… | x_refsource_MISC |
| https://github.com/OpenPrinting/cups/releases/tag… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenPrinting | cups |
Affected:
< 2.4.15
|
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CVE-2025-62786 (GCVE-0-2025-62786)
Vulnerability from cvelistv5 – Published: 2025-10-29 15:52 – Updated: 2025-10-29 16:20
VLAI
Title
Wazuh Vulnerable to Heap-based Buffer Out-Of-Bounds WRITE in decode_win_permissions
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. A heap-based out-of-bounds WRITE occurs in decode_win_permissions, resulting in writing a NULL byte 2 bytes before the start of the buffer allocated to decoded_it. A compromised agent can potentially leverage this issue to perform remote code execution, by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can leverage this issue to potentially achieve remote code execution on the wazuh manager (the exploitability of this vulnerability depends on the specifics of the respective heap allocator). This vulnerability is fixed in 4.10.2.
Severity
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
2 references
| URL | Tags |
|---|---|
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| https://github.com/wazuh/wazuh/commit/2257d7998aa… | x_refsource_MISC |
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CVE-2025-68114 (GCVE-0-2025-68114)
Vulnerability from cvelistv5 – Published: 2025-12-17 21:14 – Updated: 2025-12-18 15:09
VLAI
Title
Capstone doesn't check vsnprintf return in SStream_concat, allows stack buffer underflow and overflow
Summary
Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue.
Severity
4.8 (Medium)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/capstone-engine/capstone/secur… | x_refsource_CONFIRM |
| https://github.com/capstone-engine/capstone/commi… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| capstone-engine | capstone |
Affected:
<= 6.0.0-Alpha5
|
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CVE-2026-0966 (GCVE-0-2026-0966)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:06 – Updated: 2026-05-19 13:17
VLAI
Title
Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()
Summary
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
Severity
6.5 (Medium)
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:18160 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:18683 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7067 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-0966 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433121 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.12.0-2.el10 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-18.el9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-18.el9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.12.0-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| 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 Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-02-10 18:47
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CVE-2026-1485 (GCVE-0-2026-1485)
Vulnerability from cvelistv5 – Published: 2026-01-27 13:43 – Updated: 2026-03-18 16:44
VLAI
Title
Glib: glib: local denial of service via buffer underflow in content type parsing
Summary
A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability.
Severity
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-1485 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433325 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/glib/-/issues/3871 |
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
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cpe:/o:redhat:enterprise_linux:10 |
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| Red Hat | Red Hat Enterprise Linux 10 |
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| 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 Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
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cpe:/o:redhat:enterprise_linux:8 |
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| Red Hat | Red Hat Enterprise Linux 8 |
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|
| Red Hat | Red Hat Enterprise Linux 9 |
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| Red Hat | Red Hat Enterprise Linux 9 |
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Date Public
2026-01-27 00:00
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CVE-2026-20104 (GCVE-0-2026-20104)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:05 – Updated: 2026-03-26 17:39
VLAI
Summary
A vulnerability in the bootloader of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches, Cisco Catalyst ESS9300 Embedded Series Switches, Cisco Catalyst IE9310 and IE9320 Rugged Series Switches, and Cisco IE3500 and IE3505 Rugged Series Switches could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute arbitrary code at boot time and break the chain of trust.
This vulnerability is due to insufficient validation of software at boot time. An attacker could exploit this vulnerability by manipulating the loaded binaries on an affected device to bypass some of the integrity checks that are performed during the boot process. A successful exploit could allow the attacker to execute code that bypasses the requirement to run Cisco-signed images.
Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates because this vulnerability allows an attacker to bypass a major security feature of a device.
Severity
6.1 (Medium)
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
16.12.8
Affected: 16.12.6 Affected: 16.12.6a Affected: 16.12.7 Affected: 17.3.3 Affected: 17.3.4 Affected: 17.3.5 Affected: 17.3.6 Affected: 17.3.4b Affected: 17.3.7 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.4.1 Affected: 17.5.1 Affected: 17.6.1 Affected: 17.6.2 Affected: 17.6.3 Affected: 17.6.1y Affected: 17.6.4 Affected: 17.6.5 Affected: 17.6.6 Affected: 17.6.6a Affected: 17.6.5a Affected: 17.6.7 Affected: 17.6.8 Affected: 17.7.1 Affected: 17.7.1a Affected: 17.10.1 Affected: 17.8.1 Affected: 17.8.1a Affected: 17.9.1 Affected: 17.9.2 Affected: 17.9.1a Affected: 17.9.3 Affected: 17.9.4 Affected: 17.9.5 Affected: 17.9.4a Affected: 17.9.5b Affected: 17.9.6 Affected: 17.9.6a Affected: 17.9.7 Affected: 17.9.8 Affected: 17.11.1 Affected: 17.12.1 Affected: 17.12.2 Affected: 17.12.3 Affected: 17.12.4 Affected: 17.12.5 Affected: 17.12.6 Affected: 17.13.1 Affected: 17.14.1 Affected: 17.15.1 Affected: 17.15.2 Affected: 17.15.3 Affected: 17.15.4 Affected: 17.16.1 Affected: 17.17.1 Affected: 17.18.1 Affected: 17.18.2 |
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{
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{
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"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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"status": "affected",
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"status": "affected",
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"value": "A vulnerability in the bootloader of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches, Cisco Catalyst ESS9300 Embedded Series Switches, Cisco Catalyst IE9310 and IE9320 Rugged Series Switches, and Cisco IE3500 and IE3505 Rugged Series Switches could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute arbitrary code at boot time and break the chain of trust.\r\n\r This vulnerability is due to insufficient validation of software at boot time. An attacker could exploit this vulnerability by manipulating the loaded binaries on an affected device to bypass some of the integrity checks that are performed during the boot process. A successful exploit could allow the attacker to execute code that bypasses the requirement to run Cisco-signed images.\r\n\r Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates because this vulnerability allows an attacker to bypass a major security feature of a device."
}
],
"exploits": [
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"lang": "en",
"value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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"scope": "UNCHANGED",
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"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xe-secureboot-bypass-B6uYxYSZ"
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],
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"advisory": "cisco-sa-xe-secureboot-bypass-B6uYxYSZ",
"defects": [
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"CSCwr77016"
],
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},
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"assignerShortName": "cisco",
"cveId": "CVE-2026-20104",
"datePublished": "2026-03-25T16:05:17.530Z",
"dateReserved": "2025-10-08T11:59:15.371Z",
"dateUpdated": "2026-03-26T17:39:54.940Z",
"state": "PUBLISHED"
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CVE-2026-26204 (GCVE-0-2026-26204)
Vulnerability from cvelistv5 – Published: 2026-04-29 17:43 – Updated: 2026-04-30 12:48
VLAI
Title
Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. Due to unsigned integer underflow and pointer arithmetic wrapping, the write lands at offset -1 from the buffer, corrupting heap metadata. A malicious actor can potentially leverage this issue through a compromised agent to cause denial of service or heap corruption by injecting a specially crafted alert into the alerts log file monitored by wazuh-logcollector. This issue has been patched in version 4.14.4.
Severity
4.4 (Medium)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/wazuh/wazuh/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/wazuh/wazuh/releases/tag/v4.14.4 | x_refsource_MISC |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-26204",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-30T12:48:02.731556Z",
"version": "2.0.3"
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"type": "ssvc"
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"dateUpdated": "2026-04-30T12:48:18.639Z",
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"exploit"
],
"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "wazuh",
"vendor": "wazuh",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.0.0, \u003c 4.14.4"
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}
],
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 4.4,
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
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}
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"description": "CWE-124: Buffer Underwrite (\u0027Buffer Underflow\u0027)",
"lang": "en",
"type": "CWE"
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]
},
{
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"cweId": "CWE-191",
"description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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},
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"name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857",
"tags": [
"x_refsource_CONFIRM"
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"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857"
},
{
"name": "https://github.com/wazuh/wazuh/releases/tag/v4.14.4",
"tags": [
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"url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.4"
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],
"source": {
"advisory": "GHSA-j4c7-hwjw-8857",
"discovery": "UNKNOWN"
},
"title": "Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-26204",
"datePublished": "2026-04-29T17:43:44.911Z",
"dateReserved": "2026-02-11T19:56:24.814Z",
"dateUpdated": "2026-04-30T12:48:18.639Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Phase: Requirements
Description:
- Choose a language that is not susceptible to these issues.
Mitigation
Phase: Implementation
Description:
- All calculated values that are used as index or for pointer arithmetic should be validated to ensure that they are within an expected range.
No CAPEC attack patterns related to this CWE.