CVE-2026-4709Disclosure(mozilla / firefox)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch mozilla firefox systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-754

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

  • firefox

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-03-24); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
Products
firefox

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-03-24: 1Mentions · 2026-04-17: 1Patch / Workaround · 2026-04-17: 1Technical Details · 2026-03-24: 1Technical Details · 2026-04-17: 103-2404-17
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-03-241
Disclosure1
2026-04-171
Patch1
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-4709 Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9. https://www.cve.org/CVERecord?id=CVE-2026-4709

    Post summary

    CVE-2026-4709 is a boundary condition flaw in Firefox’s Audio/Video GMP component, affecting specific versions, with a CVE record link provided.

    00010118
    56.8K followersView on X
  • Giuseppe Paternicola@giuseppe_1337
    Patch

    🚨 HIGH SEVERITY: CVE-2026-4709 (CVSS 7.5) Incorrect boundary conditions in Firefox/Thunderbird GMP component. Affected: Firefox <149, ESR <115.34/<140.9, Thunderbird <149/<140.9 Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/ExKKlRn1tc

    Post summary

    Security advisory for CVE-2026-4709, a boundary condition vulnerability in Firefox/Thunderbird GMP affecting older versions, with CVSS 7.5, urging users to apply available patches immediately.

    0000077
    25 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillafirefox---

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