CVE-2026-4697Disclosure(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

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

mozilla CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-754CWE-787

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

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

firefox

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://www.cve.org/CVERecord?id=CVE-2026-4697

Full discourse1 post

CVE@CVEnew197d
Disclosure
CVE-2026-4697 Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9. https://www.cve.org/CVERecord?id=CVE-2026-4697
Post summary
The snippet announces CVE-2026-4697, noting a boundary condition issue in Firefox’s Web Codecs component affecting specified versions, but provides no PoC, patch, or exploitation details.
00000125
56.8K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

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

Explore more

Back to dashboard mozilla CVEs firefox vulnerabilities