CVE-2016-2191
optipng: Invalid write while processing delta escapes without any boundary checking
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · April 4, 2016
Updated · January 14, 2026
Description
The bmp_read_rows function in pngxtern/pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (invalid memory write and crash) via a series of delta escapes in a crafted BMP image.
Statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 3.3AV:L/AC:M/Au:N/C:N/I:P/A:P
CWE-787 · Out-of-bounds Write