CVE-2025-5272
published 2025-05-27CVE-2025-5272: Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort…
PriorityP340high7.3CVSS 3.1
AVNACLPRNUINSUCLILAL
EPSS
0.27%
19.4th percentile
Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 139 and Thunderbird 139.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 139.0-1 (sid) | firefox 139.0-1 (sid) |
| mozilla | firefox | < 139.0 | 139.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 139.0 | 139.0 |
| mozilla | thunderbird | >= 0 < 1:140.7.1+build1-0ubuntu0.22.04.1 | 1:140.7.1+build1-0ubuntu0.22.04.1 |
CVSS provenance
nvdv3.17.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
osv7.3HIGH
vendor_debian7.3HIGH
vendor_redhat7.3HIGH
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2026-02-02
CVE-2025-8031 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
firefox: Memory safety bugs
vendor_redhat·2025-05-27·CVSS 7.3
CVE-2025-5272 [HIGH] CWE-119 firefox: Memory safety bugs
firefox: Memory safety bugs
Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 139 and Thunderbird < 139.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Some memory bugs show evidence of memory corruption, and we presume that with enough effort, some of these could be exploited to run arbitrary code.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat
Debian
CVE-2025-5272: firefox - Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bug...
vendor_debian·2025·CVSS 7.3
CVE-2025-5272 [HIGH] CVE-2025-5272: firefox - Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bug...
Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 139 and Thunderbird < 139.
Scope: local
sid: resolved (fixed in 139.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-45: CVE-2025-5272
vendor_mozilla·CVSS 7.3
CVE-2025-5272 [HIGH] Mozilla Foundation Security Advisory 2025-45: CVE-2025-5272
Mozilla Foundation Security Advisory 2025-45
CVE: CVE-2025-5272
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 139
Mozilla
Mozilla Foundation Security Advisory 2025-42: CVE-2025-5272
vendor_mozilla·CVSS 7.3
CVE-2025-5272 [HIGH] Mozilla Foundation Security Advisory 2025-42: CVE-2025-5272
Mozilla Foundation Security Advisory 2025-42
CVE: CVE-2025-5272
Product: Firefox
Impact: moderate
Fixed in: Firefox 139
GHSA
GHSA-h36q-jch3-f9mw: Memory safety bugs present in Firefox 138 and Thunderbird 138
ghsa_unreviewed·2025-05-27
CVE-2025-5272 [HIGH] CWE-787 GHSA-h36q-jch3-f9mw: Memory safety bugs present in Firefox 138 and Thunderbird 138
Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 139.
OSV
CVE-2025-5272: Memory safety bugs present in Firefox 138 and Thunderbird 138
osv·2025-05-27·CVSS 7.3
CVE-2025-5272 [HIGH] CVE-2025-5272: Memory safety bugs present in Firefox 138 and Thunderbird 138
Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 139 and Thunderbird < 139.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-05-27
Published