CVE-2015-2158: Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote a

Q: How do I fix CVE-2015-2158?

pngcrush: upgrade to newer than 1.7.83. Exact commands for each OS are on this page.

Q: Is CVE-2015-2158 being exploited?

CVE-2015-2158 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2015-2158 affect?

CVE-2015-2158 affects pngcrush. Severity is high (CVSS 7.8). Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file.

This month

HIGH 7.8UPGRADE

CVE-2015-2158 is a high-severity flaw (CVSS 7.8) affecting pngcrush. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Weakness	CWE-189
Published	2017-10-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pngcrush project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-10-06 15:29 UTCPublished CVE record published
2026-06-17 00:23 UTCUpdated Record last modified

pngcrush project pngcrush UPGRADE

Affected: <= 1.7.83

Fixed in: newer than 1.7.83

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pngcrush || rpm -q pngcrush || pngcrush --version

2. UPGRADE to newer than 1.7.83 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pngcrush

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pngcrush

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-2158?

pngcrush: upgrade to newer than 1.7.83. Exact commands for each OS are on this page.

Is CVE-2015-2158 being exploited?

CVE-2015-2158 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-2158 affect?

CVE-2015-2158 affects pngcrush. Severity is high (CVSS 7.8). Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file.

How urgent is CVE-2015-2158?

Priority 49/100. High severity

Related CVEs

CVE-2015-7700 CRITICAL 9.8 UPGRADE Double-free vulnerability in the sPLT chunk structure and png.c in pngcrush before 1.7.87 allows attackers to

References

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