Is CVE-2026-2757 actively exploited?

No active exploitation of CVE-2026-2757 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-2757 be exploited remotely?

Yes. CVE-2026-2757 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2757?

CVE-2026-2757 has a CVSS score of 9.8 (CRITICAL) and an EPSS exploitation probability of 0.05%.

HOME VULNERABILITIESCVE-2026-2757

CRITICAL

CVE-2026-2757

Published: February 24, 2026· Updated: Feb 26, 2026

9.8

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.1th

Official Description

Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

NVD Source

Technical Analysis

CVE-2026-2757 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Mozilla2 products

firefoxthunderbird

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2026-13/

ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2026-14/

ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2026-15/

ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2026-16/

ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2026-17/

News & Research Mentioning CVE-2026-2757

Critical n8n Flaws Allow Remote Code Execution and Exposure of Stored Credentials

The Hacker News· Mar 11, 2026

Cybersecurity researchers have disclosed details of two now-patched security flaws in the n8n workflow automation platform, including two critical bugs that could result in arbitrary command execution. The vulnerabilities are listed below - CVE-2026-27577 (CVSS score: 9.4) - Expression sandbox escape leading to remote code execution (RCE) CVE-2026-27493 (CVSS score: 9.5) - Unauthenticated [xlite_meta score:53 src:The Hacker News xlite_fp:48aab9f8c21f2acc961bdc84f0eb20248a7a59ca830c41c8129b5e78bba40ff7]