CVE-2026-6747Disclosure(mozilla / firefox)

LOWCVSS 7.5 · HIGH

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

Use-after-free in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-416CWE-825

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

Signal classification1 categories

Disclosure

1100.0%

Referenced assets2 URLs

By indicator

Full discourse1 post

xvonfers@xvonfers169d
Disclosure
(CVE-2026-6747)[2021769]UAF in WebRTC/JSAPI/RTCEncodedXFrame https://www.mozilla.org/en-US/security/advisories/mfsa2026-30/#CVE-2026-6747 https://hg-edge.mozilla.org/mozilla-central/rev/5bf29e285ada38e7242ce126082d8a2ff18736a6 Reported by Nan Wang(@eternalsakura13)
Post summary
The text cites the formal disclosure of CVE‑2026‑6747, a use‑after‑free vulnerability in Mozilla’s WebRTC module, but contains no PoC, exploitation tool, active attack claim, or patch detail.
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CPE platform detail3 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

3 of 3 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	mozilla	firefox	-	-	-
App	mozilla	firefox	-	-	-
App	mozilla	thunderbird	-	-	-

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