CVE-2005-2205: The ReadLog function in kaiseki.cgi in pngren allows remote attackers to execute arbitrary commands via shell

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HIGH 7.5DOWNGRADE

CVE-2005-2205 is a high-severity flaw (CVSS 7.5) affecting pngren. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ReadLog function in kaiseki.cgi in pngren allows remote attackers to execute arbitrary commands via shell metacharacters in the query string.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Published	2005-07-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: pngren

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-07-11 04:00 UTCPublished CVE record published
2026-06-16 22:14 UTCUpdated Record last modified

pngren pngren DOWNGRADE

Affected: 2.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0.1 (Debian / Ubuntu)

apt-cache madison pngren sudo apt install pngren=<VERSION_BEFORE_2.0.1> sudo apt-mark hold pngren

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pngren sudo dnf downgrade pngren-<VERSION_BEFORE_2.0.1> sudo dnf versionlock add pngren

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2005-2205?

pngren: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-2205 being exploited?

CVE-2005-2205 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-2005-2205 affect?

CVE-2005-2205 affects pngren. Severity is high (CVSS 7.5). The ReadLog function in kaiseki.cgi in pngren allows remote attackers to execute arbitrary commands via shell metacharacters in the query string.

How urgent is CVE-2005-2205?

Priority 52/100. High severity; Public exploit reference

References

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