CVE-2026-125298

CRITICAL 9.8

AsiaInfo Business Support System (BSS) Missing JWT Signature Verification

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

AsiaInfo Business Support System (BSS) 9.2.0 through 9.2.40 does not correctly verify cryptographic signatures for JSON Web Tokens (JWT). A remote, unauthenticated attacker could forge a well-formed JWT without a valid signature and use it to execute privileged actions. Fixed in 9.2.41.

CWE	CWE-347
Vendor	asiainfo international
Product	business support system
Published	Nov 10, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

AsiaInfo International / Business Support System

9.2.0 < 9.2.41

AsiaInfo International / aether-menu

2.2.1 < 2.2.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

asiainfo.eu: https://www.asiainfo.eu/cloudbss github.com: https://github.com/trevorkaon/vulnerability-security-research/blob/main/advisories/asiainfo/CVE-2026-125298.md cve.org: https://www.cve.org/CVERecord?id=CVE-2026-125298 raw.githubusercontent.com: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-313-03.json

Credits

Trevor Kaon, security researcher (ORCID 0009-0007-0562-1331)