CVE-2025-1016Patch(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

Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-787

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
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Peaked 1d ago at 1 mentions (2026-04-13); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
Products
firefoxthunderbird

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-13: 1Mentions · 2026-10-01: 1Patch / Workaround · 2026-04-13: 1Technical Details · 2026-04-13: 104-1310-01
Signal classification1 categories
Patch
1100.0%
Full discourse2 posts
  • DFIR Lab@DFIR_Lab

    🚨 CRITICAL: CVE-2025-1016 | CVSS 9.8 Memory safety bugs in Firefox & Thunderbird could enable arbitrary code execution. Affects Firefox 134, ESR 115.19/128.6, Thunderbird 134/115.19/128.6. Patch NOW to latest versions. #CVE #PatchNow #ThreatIntel https://t.co/fSaTsp8miu

    0000038
    143 followersView on X
  • Giuseppe Paternicola@giuseppe_1337
    Patch

    🚨 CRITICAL: CVE-2025-1016 (CVSS 9.8) Memory corruption bugs in Firefox & Thunderbird allow arbitrary code execution. Network exploitable, no user interaction required. Patch NOW to Firefox 135/ESR 115.20/128.7 #CVE #PatchNow #ThreatIntel https://t.co/QKIPBZU6hH

    Post summary

    A critical memory corruption bug in Firefox and Thunderbird (CVE‑2025‑1016) allows network‑based remote code execution; patches for the latest releases are already available.

    00000195
    25 followersView on X
CPE platform detail4 entries

4 of 4 entries

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

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