Servers and applications
CVE-2015-6818
The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks.
- Severity
- High 7.5
- Published
- 6 Sept 2015
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 2.4% in the next 30 daysHigher than 84% of CVEs. EPSS by FIRST, 11 Nov 2026
- Weakness
- CWE-17
- Attack
- Over the network · No login needed
- Attacker can
- Read some data · Change some data · Slow it down
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
FFmpegServers and applications · cpe:a:ffmpeg:ffmpeg |
|