CVE-2026-81625 PUBLISHED

Stack buffer overflow in Greenbone OS and openvas-scanner

Assigner: CERTVDE
Reserved: 27.08.2026 Published: 27.08.2026 Updated: 27.08.2026

A remote attacker with user privileges may use a malicious or compromised NASL vulnerability test (VT) on the affected products to trigger a stack buffer overflow and gain full access on the compromised system.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Greenbone
Product	Greenbone OS
Versions	Default: unaffected affected from 5.0 to 25.0.5 (incl.)

Vendor	greenbone
Product	openvas-scanner
Versions	Default: unaffected affected from 3.0 to 23.49.3 (incl.)

Credits

Tristan Madani finder
Talence Security reporter

References

https://www.greenbone.net/.well-known/csaf/white/2026/gbsa2026-03.json

Problem Types

CWE-787 Out-of-bounds Write CWE