CVE-2024-21664

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.86% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 58.2% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

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

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2024-01-09 19:18Z2 YR AGO

Last updated

2025-06-17 20:59Z1 YR AGO

Reserved

2023-12-29

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

f7b7d2419ea4ff68286de350a0aa8a2ef08a838a0768a268e65e487c64f5eb8a

• github.comhttps://github.com/lestrrat-go/jwx/security/advisories/GHSA-pvcr-v8j8-j5q3x_refsource_CONFIRM
• github.comhttps://github.com/lestrrat-go/jwx/commit/0e8802ce6842625845d651456493e7c87625601fx_refsource_MISC
• github.comhttps://github.com/lestrrat-go/jwx/commit/8c53d0ae52d5ab1e2b37c5abb67def9e7958fd65x_refsource_MISC
• github.comhttps://github.com/lestrrat-go/jwx/commit/d69a721931a5c48b9850a42404f18e143704adcdx_refsource_MISC