CVE-2026-2773Disclosure(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

Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

mozilla CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-119

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
4 mentions across 3 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
Disclosure: 3 classified signals
Peaked 2d ago at 2 mentions (2026-02-25); latest day: 1
4 total mentions across 3 days

Affected systems

Vendors

mozilla

Products

firefoxthunderbird

Deep dive

Activity timeline4 mentions / 3d

Signal classification2 categories

Disclosure

375.0%

Patch

125.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-02-25	2	Disclosure2
2026-03-01	1	Disclosure1
2026-04-16	1	Patch1

Full discourse4 posts

Giuseppe Paternicola@giuseppe_1337175d
Patch
🚨 CRITICAL: CVE-2026-2773 (CVSS 9.8) - Incorrect boundary conditions in Firefox Web Audio component. Network exploitable, no user interaction required. Patched in Firefox 148, ESR 115.33/140.8, Thunderbird 148/140.8. Update immediately. #CVE #PatchNow https://t.co/GhPD57Xr1R
Post summary
CVE-2026-2773 is a critical boundary‑condition flaw in Firefox's Web Audio component (CVSS 9.8) that is network‑exploitable and already patched—users should update browsers immediately.
0000043
25 followersView on X
CRAC Learning - Tech@cracbot221d
Disclosure
CVE-2026-2773 (CVSS:9.8, CRITICAL) is Modified. Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33..https://nvd.nist.gov/vuln/detail/CVE-2026-2773 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
CVE-2026-2773 is a critical vulnerability in Firefox’s Web Audio component, affecting versions below 148 and ESR below 115.33, caused by incorrect boundary conditions.
0000029
173 followersView on X
Infoflowcloud@infoflowcloud225d
Disclosure
🚨*CVE* CVE-2026-2773 Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. https://www.cve.org/CVERecord?id=CVE-2026-2773 ----- Traducción: CVE-2026-2773 Condiciones de límite incor… http://infoflow.cloud`
Post summary
The tweet announces CVE-2026-2773, a boundary‑condition flaw in Firefox’s Web Audio component, listing affected versions but providing no PoC, exploit, or patch details.
0000042
54 followersView on X
CVE@CVEnew225d
Disclosure
CVE-2026-2773 Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. https://www.cve.org/CVERecord?id=CVE-2026-2773
Post summary
CVE-2026-2773 is a vulnerability involving incorrect boundary conditions in Firefox's Web Audio component, affecting versions below 148 and certain ESR releases.
00000441
56.6K followersView on X

CPE platform detail4 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

4 of 4 entries

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

Explore more

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What researchers are saying

CVE-2026-2773

Giuseppe Paternicola[verified]@giuseppe_1337Patch

CVE-2026-2773 is a critical boundary‑condition flaw in Firefox's Web Audio component (CVSS 9.8) that is network‑exploitable and already patched—users should update browsers immediately.

CRAC Learning - Tech@cracbotDisclosure

CVE-2026-2773 is a critical vulnerability in Firefox’s Web Audio component, affecting versions below 148 and ESR below 115.33, caused by incorrect boundary conditions.

Infoflowcloud@infoflowcloudDisclosure

The tweet announces CVE-2026-2773, a boundary‑condition flaw in Firefox’s Web Audio component, listing affected versions but providing no PoC, exploit, or patch details.

CVE@CVEnewDisclosure

CVE-2026-2773 is a vulnerability involving incorrect boundary conditions in Firefox's Web Audio component, affecting versions below 148 and certain ESR releases.