CVE-2024-56521

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 ImpacttotalSuccessful exploitation gives total 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

0.79% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 53.5% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/A:H

NVD analysis status

Analyzed. 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

2024-12-27 00:00Z1 YR AGO

Last updated

2025-03-24 17:45Z1 YR AGO

Reserved

2024-12-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-295Improper Certificate ValidationBase

Data version

5.1

Document digest

cd2967d950f3e4e5b239fcb20c8e8cb9a69dae7c9723fdf7baf0345776e3b4f1

• tcpdf.orghttps://tcpdf.org
• github.comhttps://github.com/tecnickcom/TCPDF/compare/6.7.8...6.8.0
• github.comhttps://github.com/tecnickcom/TCPDF/commit/aab43ab0a824e956276141a28a24c7c0be20f554