CVE-2025-4085Patch(mozilla / firefox)

LOWCVSS 7.1 · 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

An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-269

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

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
Products
firefoxthunderbird

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-14: 1Patch / Workaround · 2026-04-14: 1Technical Details · 2026-04-14: 104-14
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • Giuseppe Paternicola@giuseppe_1337
    Patch

    🚨 HIGH: CVE-2025-4085 (CVSS 7.1) affects Firefox & Thunderbird. Attackers with content process control can leverage UITour actor for info leak/privilege escalation. PATCH NOW to v138. #CVE #PatchNow #ThreatIntel https://t.co/NFPZc7GUSH

    Post summary

    CVE-2025-4085 causes info leakage and privilege escalation in Firefox and Thunderbird; patch v138 is available.

    00000152
    25 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

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