VulnSocial

CVE-2026-12305(mozilla / firefox)

LOWCVSS 7.5 · HIGH

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

mozilla CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-119

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • firefox
  • thunderbird

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Patch

    CVE-2026-12305 Memory Safety Bug Fixed in Firefox 152 and Firefox ESR 140.12 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12305

    Post summary

    Mozilla released a patch for CVE-2026-12305 in Firefox 152 and ESR 140.12, resolving the memory safety vulnerability.

    0000043
    4.0K followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillafirefox---
Appmozillathunderbird---
Appmozillathunderbird---

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