CVE-2026-64623

Network-AI before 5.13.4 Cryptographic Signature Verification Bypass

HIGH
8.6
CVSS Score
Published: July 20, 2026 at 12:04 PM UTC
Updated: October 24, 2026 at 08:10 PM UTC
2 products affected across 2 vendorsNetwork AINetwork-AI

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Severity
HIGH8.6
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Network-AI before 5.13.4 contains an improper cryptographic signature verification vulnerability in APSAdapter where the default local verifier accepts any non-empty string as valid. Unauthenticated attackers can submit forged APS delegation payloads with arbitrary scopes to bypass signature verification and obtain signed permission-grant tokens for sensitive resources including SHELL_EXEC.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.13.4
Affected range stops below 5.13.4, so it looks safe — our inference, not a vendor statement
0 ≤ v < 5.13.40
Vendor states this is fixed in 5.13.4 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-347

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