CVE-2026-81625: CWE-787 Out-of-bounds Write in Greenbone Greenbone OS
Description
CVE-2026-81625 is a high-severity vulnerability in Greenbone OS version 5.0 involving an out-of-bounds write (CWE-787). A remote attacker with user privileges can exploit a malicious or compromised NASL vulnerability test to trigger a stack buffer overflow, potentially gaining full access to the affected system. No official patch or remediation guidance is currently available.
CVSS v4.0
Score 8.7high
Affected software
Greenbone
Greenbone OS
greenbone
openvas-scanner
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Greenbone OS 5.0 allows a remote attacker with user privileges to execute a malicious NASL vulnerability test (VT) that triggers a stack buffer overflow via an out-of-bounds write (CWE-787). Successful exploitation can lead to full system compromise. The CVSS 4.0 base score is 8.7, reflecting network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is provided, and no known exploits are reported in the wild.
Potential Impact
If exploited, this vulnerability can allow an attacker with user privileges to gain full control over the compromised Greenbone OS system, impacting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict user privileges and carefully validate NASL tests before execution to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CERTVDE
- Date Reserved
- 2026-08-27T08:47:01.871Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9001faacd9273b49109435
Added to database: 08/27/2026, 09:23:06 UTC
Last enriched: 09/09/2026, 10:52:26 UTC
Last updated: 10/11/2026, 06:48:19 UTC
Views: 95
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