CVE-2023-45676

Name: CVE-2023-45676
Creator: NVD / NIST
Published: 2023-10-21T00:15:09.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2023-45676 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[i] = get8_packet(f);`. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[i] = get8_packet(f);`. The root cause is an integer overflow in `setup_malloc`. A sufficiently large value in the variable `sz` overflows with `sz+7` in and the negative value passes the maximum available memory buffer check. This issue may lead to code execution.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.52%

40.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nothings	Stb Vorbis.C	1.22

References

https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3656Third Party Advisory
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L950-L960Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/Third Party Advisory
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3656Third Party Advisory
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L950-L960Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/Third Party Advisory

Timeline

Published: Oct 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-45676?

How severe is CVE-2023-45676?

CVE-2023-45676 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2023-45676?

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-2023-45676?

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

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Source: NVD / NIST