CVE-2025-40920

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 34.2% of scored records. A rank, not a probability.

NVD base score

8.6 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-08-11 20:19Z1 YR AGO

Last updated

2026-01-17 20:23Z7 MO AGO

Reserved

2025-04-16

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

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

Weaknesses

• CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)Base
• CWE-340Generation of Predictable Numbers or IdentifiersClass

Data version

5.2

Document digest

c89a3e809bac59456c37393d549abe90bd53822d8de90edde863c996b682845e

• security.metacpan.orghttps://security.metacpan.org/patches/C/Catalyst-Authentication-Credential-HTTP/1.018/CVE-2025-40920-r1.patchpatch
• github.comhttps://github.com/perl-catalyst/Catalyst-Authentication-Credential-HTTP/pull/1issue-tracking
• metacpan.orghttps://metacpan.org/release/ETHER/Catalyst-Authentication-Credential-HTTP-1.018/source/lib/Catalyst/Authentication/Credential/HTTP.pm#L391
• datatracker.ietf.orghttps://datatracker.ietf.org/doc/html/rfc9562#name-security-considerations
• datatracker.ietf.orghttps://datatracker.ietf.org/doc/html/rfc7616#section-5.12
• github.comhttps://github.com/perl-catalyst/Catalyst-Authentication-Credential-HTTP/commit/ad2c03aad95406db4ce35dfb670664ebde004c18patch
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/08/12/1