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VulnerabilityCVE-2026-84479Published 2026-09-01

CVE-2026-84479 — WWBN AVideo

critical

As of 2026-09-02, CVE-2026-84479 is a CRITICAL-severity vulnerability in WWBN AVideo, CVSS v3.1 9.1, EPSS 0.3% (24.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-84479 as of 2026-09-02; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

CVSS v3.1
9.1/10Critical
EPSS
0.3%Higher than 24.1% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
0None linked yet
Priority
5.5/10Threadlinqs triage score
Published
Updated 2026-09-02
CVSS v3.1 9.1 (CRITICAL) · CVSS v4.0 9.3 · EPSS 0.3% (higher than 24.1% of all scored CVEs) · Priority 5.5/10 · Published 2026-09-01

Last updated:

What is CVE-2026-84479?

WWBN AVideo (current e01e41ecc and earlier) makes three login-time security controls depend solely on the client-supplied User-Agent header. The isAVideoEncoder()/isAVideoMobileApp() checks match HTTP_USER_AGENT against a hardcoded literal ("AVideoEncoder"/"AVideoMobileApp") with no IP check or shared secret. An attacker who submits valid credentials and sets User-Agent: AVideoEncoder bypasses two-factor authentication, skips brute-force captcha escalation, and avoids being recorded in the login/device audit history. No patch is available at the time of publication.

The record classifies CVE-2026-84479 under weakness class CWE-290. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 34 days ago.

Severity and exploitation probability

CVSS v3.1 base score
9.1 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0 base score
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS (FIRST)
0.3% probability of exploitation in the next 30 days, higher than 24.1% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
5.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-09-01, last modified 2026-09-02

Is CVE-2026-84479 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-84479

No vendor patch reference has been recorded for CVE-2026-84479 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-84479

No threat campaign in the Threadlinqs corpus currently references CVE-2026-84479, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org, GitHub Security Advisories, NVD, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

Third-party advisory