CVE-2026-79667

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 24.9% of scored records. A rank, not a probability.

NVD base score

7.2 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-08-31.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-25 11:33Z2 MO AGO

Last updated

2026-08-25 13:28Z2 MO AGO

Reserved

2026-08-25

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 7.2)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Weaknesses

• CWE-285Improper AuthorizationClass

Data version

5.2

Document digest

7b0a8513a31c3a7869883bad7f6634dedbf1563da21dad2661ece9153d866f43

• github.comGitHub Security Advisory (GHSA-4h9q-p5j4-xvvh)https://github.com/lin-snow/Ech0/security/advisories/GHSA-4h9q-p5j4-xvvhvendor-advisory
• www.vulncheck.comVulnCheck Advisory: Ech0 before 4.4.3 Authentication Bypass via Scope Enforcementhttps://www.vulncheck.com/advisories/ech0-before-authentication-bypass-via-scope-enforcementthird-party-advisory