CVE-2026-117862
published 2026-10-27CVE-2026-117862: Privilege escalation due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox…
PriorityP424
EPSS
0.19%
8.3th percentile
Privilege escalation due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 159 | Firefox 159 |
| mozilla | firefox_esr | < Firefox ESR 153.6 | Firefox ESR 153.6 |
| mozilla | firefox_esr | < Firefox ESR 115.44 | Firefox ESR 115.44 |
| mozilla | thunderbird | < Thunderbird 159 | Thunderbird 159 |
| mozilla | thunderbird | < Thunderbird 153.6 | Thunderbird 153.6 |
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Mozilla
Mozilla Foundation Security Advisory 2026-121: CVE-2026-117862
vendor_mozilla
CVE-2026-117862 Mozilla Foundation Security Advisory 2026-121: CVE-2026-117862
Mozilla Foundation Security Advisory 2026-121
CVE: CVE-2026-117862
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 159
Mozilla
Mozilla Foundation Security Advisory 2026-120: CVE-2026-117862
vendor_mozilla
CVE-2026-117862 Mozilla Foundation Security Advisory 2026-120: CVE-2026-117862
Mozilla Foundation Security Advisory 2026-120
CVE: CVE-2026-117862
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.6
Mozilla
Mozilla Foundation Security Advisory 2026-119: CVE-2026-117862
vendor_mozilla
CVE-2026-117862 Mozilla Foundation Security Advisory 2026-119: CVE-2026-117862
Mozilla Foundation Security Advisory 2026-119
CVE: CVE-2026-117862
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 115.44
Mozilla
Mozilla Foundation Security Advisory 2026-118: CVE-2026-117862
vendor_mozilla
CVE-2026-117862 Mozilla Foundation Security Advisory 2026-118: CVE-2026-117862
Mozilla Foundation Security Advisory 2026-118
CVE: CVE-2026-117862
Product: Firefox
Impact: low
Fixed in: Firefox 159
Mozilla
Mozilla Foundation Security Advisory 2026-122: CVE-2026-117862
vendor_mozilla
CVE-2026-117862 Mozilla Foundation Security Advisory 2026-122: CVE-2026-117862
Mozilla Foundation Security Advisory 2026-122
CVE: CVE-2026-117862
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.6
VulDB
Mozilla Firefox up to 115.43/153.5/158 Networking privileges management (Nessus ID 372631)
vuldb·2026-10-28
CVE-2026-117862 [CRITICAL] Mozilla Firefox up to 115.43/153.5/158 Networking privileges management (Nessus ID 372631)
A vulnerability was found in Mozilla Firefox up to 115.43/153.5/158 and classified as critical. Affected is an unknown function of the component Networking. Executing a manipulation can lead to improper privilege management.
This vulnerability appears as CVE-2026-117862. The attack may be performed from remote. There is no available exploit.
It is suggested to upgrade the affected component.
GHSA
Privilege escalation due to incorrect boundary conditions in the Networking component.
ghsa_unreviewed·2026-10-27
CVE-2026-117862 Privilege escalation due to incorrect boundary conditions in the Networking component.
Privilege escalation due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2054644https://www.mozilla.org/security/advisories/mfsa2026-118/https://www.mozilla.org/security/advisories/mfsa2026-119/https://www.mozilla.org/security/advisories/mfsa2026-120/https://www.mozilla.org/security/advisories/mfsa2026-121/https://www.mozilla.org/security/advisories/mfsa2026-122/
2026-10-27
Published