VulnSocial

CVE-2025-11719Patch(microsoft / firefox)

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft firefox systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Starting in Thunderbird 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption. This vulnerability was fixed in Firefox 144 and Thunderbird 144.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • firefox
  • thunderbird
  • windows

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoftmozilla
Products
firefoxthunderbirdwindows

1 version affected across 3 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-15: 1Patch / Workaround · 2026-04-15: 1Technical Details · 2026-04-15: 104-15
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • Giuseppe Paternicola@giuseppe_1337
    Patch

    🚨 CRITICAL: CVE-2025-11719 (CVSS 9.8) - Use-after-free in Thunderbird 143+ native messaging API on Windows. Memory corruption leads to crashes. Fixed in Firefox/Thunderbird 144. Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/YcnqISYVun

    Post summary

    The tweet announces a critical use‑after‑free CVE in Thunderbird, highlights the severity and patch availability, and urges immediate updating to version 144.

    00000147
    25 followersView on X
CPE platform detail3 entries

3 of 3 entries

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

Explore more

Back to dashboardmicrosoft CVEsmozilla CVEsfirefox vulnerabilities