VulnSocial

CVE-2026-0881Disclosure(mozilla / firefox)

LOWCVSS 10.0 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

mozilla CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-284CWE-693

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

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-01-29: 1Technical Details · 2026-01-29: 101-29
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Tech Nexus@ith_tokyo
    Disclosure

    Firefox、Thunderbirdを最優先でアップデートすべき脆弱性（CVSS 10.0（緊急）報告。 ブラウザやタブ内での処理はOSから分離されてますが（サンドボックス）、この脆弱性はそれを突破してOSの操作やファイルの読み書きが出来る。 攻撃者のWEBにアクセスしただけでアウト。 https://nvd.nist.gov/vuln/detail/CVE-2026-0881

    Post summary

    The post alerts that CVE-2026-0881 is a high‑severity sandbox escape affecting Firefox and Thunderbird, urging urgent updates, but provides no PoC, exploit, active attack confirmation, or patch information.

    00000104
    51 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

Explore more

Back to dashboardmozilla CVEsfirefox vulnerabilities