CVE-2025-10536
published 2025-09-16CVE-2025-10536: Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird…
PriorityP425medium6.2CVSS 3.1
AVLACLPRNUINSUCHINAN
EPSS
0.15%
4.9th percentile
Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 143.0-1 (sid) | firefox 143.0-1 (sid) |
| debian | firefox-esr | < firefox 143.0-1 (sid) | firefox 143.0-1 (sid) |
| debian | thunderbird | < firefox 143.0-1 (sid) | firefox 143.0-1 (sid) |
| mozilla | firefox | < 140.3.0 | 140.3.0 |
| mozilla | firefox | < 143.0 | 143.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 140.3.0 | 140.3.0 |
| mozilla | thunderbird | >= 0 < 1:140.3.0esr-1~deb11u1 | 1:140.3.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:140.3.0esr-1~deb12u1 | 1:140.3.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:140.3.0esr-1~deb13u1 | 1:140.3.0esr-1~deb13u1 |
| mozilla | thunderbird | >= 0 < 1:140.3.0esr-1 | 1:140.3.0esr-1 |
| mozilla | thunderbird | >= 141.0 < 143.0 | 143.0 |
CVSS provenance
nvdv3.16.2MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
osv6.2MEDIUM
vendor_debian6.2MEDIUM
vendor_redhat6.2MEDIUM
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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: thunderbird: Information disclosure in the Networking: Cache component
vendor_redhat·2025-09-16·CVSS 6.2
CVE-2025-10536 [MEDIUM] firefox: thunderbird: Information disclosure in the Networking: Cache component
firefox: thunderbird: Information disclosure in the Networking: Cache component
Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure in the Networking: Cache component.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (R
Debian
CVE-2025-10536: firefox - Information disclosure in the Networking: Cache component. This vulnerability af...
vendor_debian·2025·CVSS 6.2
CVE-2025-10536 [MEDIUM] CVE-2025-10536: firefox - Information disclosure in the Networking: Cache component. This vulnerability af...
Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
Scope: local
sid: resolved (fixed in 143.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-77: CVE-2025-10536
vendor_mozilla·CVSS 6.2
CVE-2025-10536 [MEDIUM] Mozilla Foundation Security Advisory 2025-77: CVE-2025-10536
Mozilla Foundation Security Advisory 2025-77
CVE: CVE-2025-10536
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 143
Mozilla
Mozilla Foundation Security Advisory 2025-75: CVE-2025-10536
vendor_mozilla·CVSS 6.2
CVE-2025-10536 [MEDIUM] Mozilla Foundation Security Advisory 2025-75: CVE-2025-10536
Mozilla Foundation Security Advisory 2025-75
CVE: CVE-2025-10536
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.3
Mozilla
Mozilla Foundation Security Advisory 2025-78: CVE-2025-10536
vendor_mozilla·CVSS 6.2
CVE-2025-10536 [MEDIUM] Mozilla Foundation Security Advisory 2025-78: CVE-2025-10536
Mozilla Foundation Security Advisory 2025-78
CVE: CVE-2025-10536
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.3
Mozilla
Mozilla Foundation Security Advisory 2025-73: CVE-2025-10536
vendor_mozilla·CVSS 6.2
CVE-2025-10536 [MEDIUM] Mozilla Foundation Security Advisory 2025-73: CVE-2025-10536
Mozilla Foundation Security Advisory 2025-73
CVE: CVE-2025-10536
Product: Firefox
Impact: high
Fixed in: Firefox 143
OSV
CVE-2025-10536: Information disclosure in the Networking: Cache component
osv·2025-09-16·CVSS 6.2
CVE-2025-10536 [MEDIUM] CVE-2025-10536: Information disclosure in the Networking: Cache component
Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
GHSA
GHSA-74x5-q3v4-qjxx: This vulnerability affects Firefox < 143, Firefox ESR < 140
ghsa_unreviewed·2025-09-16
CVE-2025-10536 [HIGH] CWE-200 GHSA-74x5-q3v4-qjxx: This vulnerability affects Firefox < 143, Firefox ESR < 140
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1981502https://www.mozilla.org/security/advisories/mfsa2025-73/https://www.mozilla.org/security/advisories/mfsa2025-75/https://www.mozilla.org/security/advisories/mfsa2025-77/https://www.mozilla.org/security/advisories/mfsa2025-78/https://lists.debian.org/debian-lts-announce/2025/09/msg00020.htmlhttps://lists.debian.org/debian-lts-announce/2025/09/msg00026.html
2025-09-16
Published