Vulnerability Database

322,935

Total vulnerabilities in the database

CVE-2021-42716

An issue was discovered in stb stb_image.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stb_image, or read up to 1024 bytes of non-consecutive heap data without control over the read location.

  • Published: Oct 21, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-42716
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.1
  • AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

CVSS v2:

  • Severity: Medium
  • Score: 5.8
  • AV:N/AC:M/Au:N/C:P/I:N/A:P

CWEs: