CVE-2024-3203

Name: CVE-2024-3203
Creator: NVD / NIST
Published: 2024-04-02T22:15:10.32+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.35%

Last modified Jun 17, 2026

CVE-2024-3203 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability, which was classified as critical, was found in c-blosc2 up to 2.13.2. Affected is the function ndlz8_decompress of the file /src/c-blosc2/plugins/codecs/ndlz/ndlz8x8.c. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

A vulnerability, which was classified as critical, was found in c-blosc2 up to 2.13.2. Affected is the function ndlz8_decompress of the file /src/c-blosc2/plugins/codecs/ndlz/ndlz8x8.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.14.3 is able to address this issue. It is recommended to upgrade the affected component. VDB-259050 is the identifier assigned to this vulnerability.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.35%

67.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions
Blosc	C-Blosc2	<= 2.13.2

References

https://drive.google.com/drive/folders/1T1k3UeS09m65LjVXExUuZfedNQPWQWCo?usp=sharingProduct
https://github.com/Blosc/c-blosc2/releases/tag/v2.14.3Release Notes
https://vuldb.com/?ctiid.259050Permissions Required, VDB Entry
https://vuldb.com/?id.259050Third Party Advisory, VDB Entry
https://vuldb.com/?submit.304556Exploit, VDB Entry
https://drive.google.com/drive/folders/1T1k3UeS09m65LjVXExUuZfedNQPWQWCo?usp=sharingProduct
https://github.com/Blosc/c-blosc2/releases/tag/v2.14.3Release Notes
https://vuldb.com/?ctiid.259050Permissions Required, VDB Entry
https://vuldb.com/?id.259050Third Party Advisory, VDB Entry
https://vuldb.com/?submit.304556Exploit, VDB Entry

Timeline

Published: Apr 2, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-3203?

How severe is CVE-2024-3203?

CVE-2024-3203 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.

How do I fix CVE-2024-3203?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-3203?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST