optipng: Invalid write while processing delta escapes without any boundary checking
Published Apr 13, 2016
6.5
MEDIUMCVSS 3.0
EPSS 3.52%
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.
Affected products
No data.
Configuration 2
- 12.04
- 14.04
- 15.04
Configuration 3
- 7.0
- 8.0
No data.
Red Hat Enterprise Linux 7
optipng
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | optipng | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat 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/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.52% (0.03519) | 88.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.53% (0.03532) | 87.72th | v5 (v2026.06.15) |
| Jun 19, 2025 | 1.85% (0.01852) | 82.17th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.77% (0.00770) | 71.80th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.22% (0.02221) | 89.89th | v3 (v2023.03.01) |
| Nov 30, 2023 | 2.22% (0.02221) | 88.29th | v3 (v2023.03.01) |
| Jul 15, 2023 | 2.05% (0.02049) | 87.48th | v3 (v2023.03.01) |
| Apr 26, 2023 | 1.81% (0.01815) | 86.39th | v3 (v2023.03.01) |
| Mar 17, 2023 | 1.55% (0.01548) | 85.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.45% (0.01454) | 84.60th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.96% (0.01955) | 78.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.96% (0.01955) | 76.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.96% (0.01955) | 55.71th | v2 (v2022.01.01) |
References (14)
- http://lists.opensuse.org/opensuse-updates/2016-04/msg00061.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-04/msg00065.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://packetstormsecurity.com/files/136553/Optipng-Invalid-Write.html x_refsource_MISCExploit
- http://seclists.org/fulldisclosure/2016/Apr/15 mailing-listx_refsource_FULLDISCThird Party Advisory
- http://www.debian.org/security/2016/dsa-3546 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/04/04/2 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.securityfocus.com/archive/1/537972/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.ubuntu.com/usn/USN-2951-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-2191 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1308550 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-2191
- https://security.gentoo.org/glsa/201608-01 vendor-advisoryx_refsource_GENTOO
- https://sourceforge.net/p/optipng/bugs/59/ x_refsource_CONFIRMPatch
- https://www.cve.org/CVERecord?id=CVE-2016-2191
Change history (0)
No recorded changes yet.