CVE-2026-8094Network attack vector

Unspecified impact through WebRTC processing

Published May 7, 2026 · Updated May 7, 2026

An unspecified WebRTC issue in Mozilla Firefox ESR and Thunderbird before 140.10.2 allows remote attackers to cause unspecified impact. Mozilla has not published the flawed WebRTC operation or the untrusted input that reaches it. Public assessments disagree on whether user interaction is required, leaving the exploitability gate and concrete consequences undisclosed.

CVSS severity9.8
Critical
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An unspecified WebRTC issue in Mozilla Firefox ESR and Thunderbird before 140.10.2 allows remote attackers to cause unspecified impact. Mozilla has not published the flawed WebRTC operation or the untrusted input that reaches it. Public assessments disagree on whether user interaction is required, leaving the exploitability gate and concrete consequences undisclosed.

The record

CVE
CVE-2026-8094
Published
May 7, 2026
Updated
May 7, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2026CVE publishedPublication date reported by the CVE source.
  2. May 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5redhat-SADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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