Ahsay AhsayCBS Authentication Bypass Vulnerability
What this means
This is rated medium severity (6.9 out of 10). It is on the known-exploited catalogue, which means attacks using it have already been seen. Ask IT whether Ahsay Cloud Backup Suite is in your estate.
Full vendor description
A vulnerability was detected in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This affects the function checkSysPwd of the file com/ahsay/obs/api/ApiStructsAction.java of the component API. Performing a manipulation of the argument random results in improper authentication. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 9.15.2.70 and 10.3.4.45 is able to mitigate this issue. It is recommended to upgrade the affected component. The initial patch did not fix the security vulnerability properly. An update of the CVE entry to reflect this became necessary.
Scoring and exploitation
Exploitable over the network without any account, and no one has to click or open anything. Low impact on confidentiality, integrity and availability.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/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
Exploitability
Longer bar: easier to attack
Impact
Longer bar: more harm
- Elevated attack likelihood (~84.5% in 30 days)Model estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Yes — confirmed exploitation (US CISA )
- Not reported
- Listed product
- AhsayCBS
Weaknesses
Affected products ()
- Ahsay Cloud Backup Suite
Show the raw CPE strings (1)
- cpe:2.3:a:ahsay:cloud_backup_suite:*:*:*:*:*:*:*:*
References
7 links from the CVE record, grouped by site; the vendor's advisory comes first.
ahsay.com1 linkVendor advisory
- patch-cve-105133-105134-update (opens in a new tab)Vendor Advisory
vuldb.com4 links
- CVE-2026-105133 (opens in a new tab)Third Party Advisory · VDB Entry
- 942688 (opens in a new tab)Third Party Advisory · VDB Entry
- 413350 (opens in a new tab)Third Party Advisory · VDB Entry
Show 1 more from vuldb.com
- cti (opens in a new tab)Permissions Required · VDB Entry
huntress.com1 link
- ahsaycbs-flaws-exploit (opens in a new tab)Third Party Advisory
cisa.gov1 link
- known-exploited-vulnerabilities-catalog (opens in a new tab)US Government Resource