🛡️ USN-7191-1 — firefox

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

firefox vulnerabilities

Multiple security issues were discovered in Firefox. If a user were

tricked into opening a specially crafted website, an attacker could

potentially exploit these to cause a denial of service, obtain sensitive

information across domains, or execute arbitrary code. (CVE-2025-0237,

CVE-2025-0239, CVE-2025-0240, CVE-2025-0242, CVE-2025-0243, CVE-2025-0247)

Irvan Kurniawan discovered that Firefox incorrectly handled memory when

breaking lines in text, leading to a use-after-free vulnerability. An

attacker could possibly use this issue to cause a denial of service or

possibly execute arbitrary code. (CVE-2025-0238)

Nils Bars discovered that Firefox incorrectly handled memory when using

JavaScript Text Segmentation. An attacker could possibly use this issue to

cause a denial of service. (CVE-2025-0241)

Affected software

USN-7191-1 is recorded against 1 package.

  • firefox (fixed in 134.0+build1-0ubuntu0.20.04.1)

Timeline and source

Published on 9 January 2025 and last revised on 27 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Advisory)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-01-09
Updated 2026-08-12
Modified 2026-04-27
Fix URL N/A

Affected Packages

Software From version Fixed in
firefox — 134.0+build1-0ubuntu0.20.04.1

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