7.8

CVE-2023-45676: nothings stb Out-of-bounds Write

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2023-45676DEBIAN-CVE-2023-45676
Published 20-10-2023Last modified 12-09-2024
Open JSON

Vulnerability summary

CVE-2023-45676 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in nothings stb. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.52%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
MGASA-2026-0191OPENSUSE-SU-2025:0037-1OPENSUSE-SU-2025:14642-1OPENSUSE-SU-2026:10978-1

Timeline

  1. 20-10-2023
    PublishedVulnerability first disclosed.
  2. 12-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

0.00 pp

From 0.52% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.52%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Nothings2 products
Debian1 product
  • libstbAll versions (No fix recorded)
Ubuntu1 product
  • libstbAll versions (No fix recorded)

3 vendors · 4 products

References

7 links