VulnSocial

CVE-2026-74943Disclosure(mozilla / firefox)

LOWCVSS 9.8 · CRITICAL

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

Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

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0.5/ 10 priority

Sources & remediation

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

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
  • thunderbird

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 2d ago at 1 mentions (2026-08-17); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-08-17: 1Mentions · 2026-08-25: 1Mentions · 2026-09-30: 1Patch / Workaround · 2026-08-25: 1Technical Details · 2026-08-25: 108-1708-2509-30
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-08-171
Disclosure1
2026-08-251
Patch1
Full discourse3 posts
  • ABDULAZIZ ALASAIQAH@DS4_
    Disclosure

    الحمدلله باركوا لي طلعت 3 CVE في Firefox Browser CVE-2026-74943 CVE-2026-74945 CVE-2026-74970 There are 2 more CVEs coming بيجيكم اطلق write up #Firefox #CVE #bugzilla #mozilla #browser #infosec #secinfo

    Post summary

    The user announces the discovery of three new Firefox CVEs, indicates two more are forthcoming, and promises an upcoming write-up.

    3320171599.5K
    952 followersView on X
  • takenaka hiroya@Joe_Biden_ja
    Patch

    Firefox と Thunderbird に解放後利用 CVE-2026-74943（CVSS 9.8）。画像デコード部分の欠陥で、遠隔から権限も操作も不要という評価です。修正版は 115.39.0 / 140.14.0 / 153.1.0 と系列で分かれるので、まず自分がど… https://ai-news.autoarticles.net/article/post_1787664210505_2qekb7

    Post summary

    The article reports CVE-2026-74943, detailing a remote image‑decoding issue with CVSS 9.8 and listing the patch versions, but does not provide a PoC, exploit code, or evidence of active exploitation.

    0001095
    562 followersView on X
  • ABDULAZIZ ALASAIQAH@DS4_

    @Cybers_SA https://app.opencve.io/cve/CVE-2026-74943

    0000034
    946 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

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