JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact — CVE-2025-40928
Date
Source
MSRC
MSRC
Vendor
Microsoft
Microsoft
Threat
high
high
CVSS
7.5
7.5
Summary
Advisory CVE-2025-40928. JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling… Vendor: Microsoft. Source: MSRC. Threat: high. CVSS 7.5. See the official advisory for…
What to do
General, cautious steps (verify details in the official source):
- Prioritize patching or mitigation immediately (treat as actively risky).
- Identify affected product versions in your inventory and verify whether you are impacted.
- Apply vendor patches/updates or recommended mitigations as soon as available.
- Read the official advisory for exact affected versions and remediation steps.