CVE-2016-7955
The logcheck function in session.inc in AlienVault OSSIM before 5.3.1, when an action has been created, and USM before 5.3.1 allows remote attackers to bypass authentication and consequently obtain sensitive information, modify the application, or…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The logcheck function in session.inc in AlienVault OSSIM before 5.3.1, when an action has been created, and USM before 5.3.1 allows remote attackers to bypass authentication and consequently obtain sensitive information, modify the application, or execute arbitrary code as root via an "AV Report Scheduler" HTTP User-Agent header.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.41% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- alienvault/ossim · alienvault/unified security management
- Source
- cve@mitre.org
EPSS moved from 5.0% on 21 September 2026 to 6.4% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/archive/1/540224/100/0/threaded
- http://www.zerodayinitiative.com/advisories/ZDI-16-517/Third Party Advisory, VDB Entry
- https://www.alienvault.com/forums/discussion/7765/alienvault-v5-3-1-hotfixVendor Advisory
- http://www.securityfocus.com/archive/1/540224/100/0/threaded
- http://www.zerodayinitiative.com/advisories/ZDI-16-517/Third Party Advisory, VDB Entry
- https://www.alienvault.com/forums/discussion/7765/alienvault-v5-3-1-hotfixVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.