SB20260728124 - Anolis OS update for firefox

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260728124

SB20260728124 - Anolis OS update for firefox

Published: July 28, 2026

Security Bulletin ID SB20260728124
CSH Severity
High
Patch available
YES
Number of vulnerabilities 9
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 67% Medium 22% Low 11%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 9 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2026-12290)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to memory corruption in Firefox ESR when processing crafted content. A remote attacker can trigger the memory safety bug to execute arbitrary code.


2) Use-after-free (CVE-ID: CVE-2026-12291)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in the Networking: HTTP component when handling HTTP content. A remote attacker can send crafted content to execute arbitrary code.


3) Improper access control (CVE-ID: CVE-2026-12294)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to escape the sandbox.

The vulnerability exists due to improper access control in the DOM: Workers component when processing worker content. A remote attacker can trigger the vulnerable component to escape the sandbox.


4) Improper access control (CVE-ID: CVE-2026-12295)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to escape the sandbox.

The vulnerability exists due to improper access control in the DOM: Navigation component when processing navigation operations. A remote attacker can trigger the vulnerable component to escape the sandbox.


5) Buffer overflow (CVE-ID: CVE-2026-12297)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to escape the sandbox.

The vulnerability exists due to incorrect boundary conditions in the Networking component when processing network data. A remote attacker can trigger the vulnerable component to escape the sandbox.


6) Protection Mechanism Failure (CVE-ID: CVE-2026-12302)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass a security mitigation.

The vulnerability exists due to improper access control in the DOM: Security component when enforcing security restrictions. A remote attacker can trigger the vulnerable component to bypass a security mitigation.


7) Out-of-bounds read (CVE-ID: CVE-2026-12324)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in the Graphics: CanvasWebGL component when rendering WebGL content. A remote attacker can trigger the vulnerable behavior to cause a denial of service.


8) Input validation error (CVE-ID: CVE-2026-12325)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in the Graphics: ImageLib component when parsing image content. A remote attacker can supply crafted image content to cause a denial of service.


9) Buffer overflow (CVE-ID: CVE-2026-12327)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to memory corruption in multiple unspecified components when parsing input. A remote attacker can trigger the vulnerable behavior to execute arbitrary code.

Some of the bugs showed evidence of memory corruption.


Remediation

Install update from vendor's website.

References