CVE-2025-40908 - CVE House
Back to Database
Status published Unknown CVE-2025-40908

YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified

Vulnerability Description

YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-40908

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • @shlomif (Shlomi Fish)

References

Affected Vendor

Affected Software

YAML::LibYAML
Vulnerable Versions:
0

Timeline

Official Publish: June 1st, 2025
Last Modified: June 2nd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

CWE-552

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1083 File and Directory Discovery
Discovery
T1005 Data from Local System
Collection
T1041 Exfiltration Over C2 Channel
Exfiltration
T1565 Data Manipulation
Impact