AsiaInfo BSS: Missing authentication in management API
Summary
AsiaInfo Business Support System (BSS) versions 9.2.0 through 9.2.40 accept unauthenticated requests to the management API at /bss/sysmgnt/api/. A remote attacker without credentials can create an account with administrative privileges or take over existing accounts, and then perform administrative actions. The flaw is classified as CWE-306 and CWE-862, and the CVSS 4.0 base score of 9.3 is critical.
Affected
- AsiaInfo BSS 9.2.0 to 9.2.40
- aether-menu 2.2.1 to 2.2.6 (listed as affected in the CVE record)
Fixed in
- AsiaInfo BSS 9.2.41
- aether-menu 2.2.7 (listed as unaffected in the CVE record)
Workaround
Unknown.
Exploitation
- No known exploitation at the time of writing.
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the time of writing.
Our recommendation
- Ask your telecom operator, ISP, MVNO or managed service provider whether they run AsiaInfo BSS 9.2.x and whether they have installed 9.2.41 or later.
- Check whether any management interface of this system is reachable from the internet or untrusted networks, and restrict access.
- Review administrator and operator accounts for unexpected additions or password changes.
- Monitor access logs for unauthenticated requests to /bss/sysmgnt/api/.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE Record CVE-2026-125297 www.cve.org
- Researcher advisory CVE-2026-125297 github.com
- CISA CSAF advisory va-26-313-03 raw.githubusercontent.com
- AsiaInfo CloudBSS www.asiainfo.eu
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 10 Nov 2026, 23:35.
Original description (NVD)
AsiaInfo Business Support System (BSS) 9.2.0 through 9.2.40 accepts unauthenticated requests via the management API '/bss/sysmgnt/api/'. A remote, unauthenticated attacker could provision a new account with administrative privileges or take over existing accounts, and perform other administrative actions. Fixed in 9.2.41.
NVD references (4)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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