CVE-2026-4717Disclosure(mozilla / firefox)

LOWCVSS 9.8 · CRITICAL

Signal is active with 3 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

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

0.0/ 10 priority

Sources & remediation

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

Threat summary

  • 3 mentions across 1 observed day

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • 3 total mentions across 1 day

Affected systems

Vendors
Products
firefox

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-03-24: 3Technical Details · 2026-03-24: 303-24
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-4717 Privilege Escalation Vulnerability in Firefox Browser Versions Below 149 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4717

    Post summary

    The text announces CVE‑2026‑4717 as a privileged‑escalation flaw impacting Firefox versions below 149, without indicating any PoC, exploit, active use, or mitigation.

    0001151
    4.0K followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🔴 CVE-2026-4717 - Critical Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. https://www.thehackerwire.com/vulnerability/CVE-2026-4717/ https://t.co/FsVZ8AZ6m1

    Post summary

    A new privilege escalation vulnerability (CVE‑2026‑4717) in the Netmonitor component of Firefox and Thunderbird is announced, impacting versions below 149 and 140.9.

    0000066
    145 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-4717 Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9. https://www.cve.org/CVERecord?id=CVE-2026-4717

    Post summary

    The text announces a new privilege escalation vulnerability (CVE-2026-4717) in Firefox's Netmonitor component affecting versions below 149 and ESR below 140.9, without any current exploitation or patch information.

    0000092
    56.8K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillafirefox---

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