CVE-2025-0241
published 2025-01-07CVE-2025-0241: When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability was fixed in Firefox…
PriorityP341high7.7CVSS 3.1
AVNACHPRNUINSUCHIHAL
EPSS
0.73%
54.1th percentile
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 134.0-1 (sid) | firefox 134.0-1 (sid) |
| debian | firefox-esr | < firefox 134.0-1 (sid) | firefox 134.0-1 (sid) |
| debian | thunderbird | < firefox 134.0-1 (sid) | firefox 134.0-1 (sid) |
| mozilla | firefox | < 128.6.0 | 128.6.0 |
| mozilla | firefox | < 134.0 | 134.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 134.0+build1-0ubuntu0.20.04.1 | 134.0+build1-0ubuntu0.20.04.1 |
| mozilla | thunderbird | < 128.6.0 | 128.6.0 |
| mozilla | thunderbird | >= 0 < 1:128.6.0esr-1~deb11u1 | 1:128.6.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:128.6.0esr-1~deb12u1 | 1:128.6.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:128.6.0esr-1 | 1:128.6.0esr-1 |
| mozilla | thunderbird | >= 0 < 1:128.6.0esr-1 | 1:128.6.0esr-1 |
| mozilla | thunderbird | >= 129.0 < 134.0 | 134.0 |
CVSS provenance
nvdv3.17.7HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
osv7.7HIGH
vendor_debian7.7HIGH
vendor_redhat7.7HIGH
vendor_ubuntu5.4MEDIUM
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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.
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2025-01-09·CVSS 5.4
CVE-2025-0240 [MEDIUM] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Several security issues were fixed in Firefox.
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 Segm
Red Hat
firefox: Memory corruption when using JavaScript Text Segmentation
vendor_redhat·2025-01-07·CVSS 7.7
CVE-2025-0241 [HIGH] CWE-119 firefox: Memory corruption when using JavaScript Text Segmentation
firefox: Memory corruption when using JavaScript Text Segmentation
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash.
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) - Affected
Package: firefox-flatpak-container (Red Hat Enterprise Linux 10) - Affected
Package: thunderbird
Debian
CVE-2025-0241: firefox - When segmenting specially crafted text, segmentation would corrupt memory leadin...
vendor_debian·2025·CVSS 7.7
CVE-2025-0241 [HIGH] CVE-2025-0241: firefox - When segmenting specially crafted text, segmentation would corrupt memory leadin...
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
Scope: local
sid: resolved (fixed in 134.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-02: CVE-2025-0241
vendor_mozilla·CVSS 7.7
CVE-2025-0241 [HIGH] Mozilla Foundation Security Advisory 2025-02: CVE-2025-0241
Mozilla Foundation Security Advisory 2025-02
CVE: CVE-2025-0241
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 128.6
Mozilla
Mozilla Foundation Security Advisory 2025-04: CVE-2025-0241
vendor_mozilla·CVSS 7.7
CVE-2025-0241 [HIGH] Mozilla Foundation Security Advisory 2025-04: CVE-2025-0241
Mozilla Foundation Security Advisory 2025-04
CVE: CVE-2025-0241
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 134
Mozilla
Mozilla Foundation Security Advisory 2025-05: CVE-2025-0241
vendor_mozilla·CVSS 7.7
CVE-2025-0241 [HIGH] Mozilla Foundation Security Advisory 2025-05: CVE-2025-0241
Mozilla Foundation Security Advisory 2025-05
CVE: CVE-2025-0241
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 128.6
Mozilla
Mozilla Foundation Security Advisory 2025-01: CVE-2025-0241
vendor_mozilla·CVSS 7.7
CVE-2025-0241 [HIGH] Mozilla Foundation Security Advisory 2025-01: CVE-2025-0241
Mozilla Foundation Security Advisory 2025-01
CVE: CVE-2025-0241
Product: Firefox
Impact: high
Fixed in: Firefox 134
VulDB
Mozilla Firefox up to 133.x Text memory corruption (EUVD-2025-1573 / Nessus ID 213575)
vuldb·2026-09-30·CVSS 7.7
CVE-2025-0241 [HIGH] Mozilla Firefox up to 133.x Text memory corruption (EUVD-2025-1573 / Nessus ID 213575)
A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 133.x. The affected element is an unknown function of the component Text Handler. The manipulation results in memory corruption.
This vulnerability is known as CVE-2025-0241. It is possible to launch the attack remotely. No exploit is available.
You should upgrade the affected component.
OSV
firefox vulnerabilities
osv·2025-01-09·CVSS 5.4
CVE-2025-0237 [MEDIUM] firefox vulnerabilities
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 d
OSV
CVE-2025-0241: When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash
osv·2025-01-07·CVSS 7.7
CVE-2025-0241 [HIGH] CVE-2025-0241: When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
GHSA
GHSA-hh4j-jwjv-8726: When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash
ghsa_unreviewed·2025-01-07
CVE-2025-0241 [HIGH] CWE-401 GHSA-hh4j-jwjv-8726: When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 134 and Firefox ESR < 128.6.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1933023https://www.mozilla.org/security/advisories/mfsa2025-01/https://www.mozilla.org/security/advisories/mfsa2025-02/https://www.mozilla.org/security/advisories/mfsa2025-04/https://www.mozilla.org/security/advisories/mfsa2025-05/https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html
2025-01-07
Published