CVE-2008-5263: Multiple stack-based buffer overflows in the mt_codec::getHdrHead function in kernel/kls_hdr/fmt_codec_hdr.cpp

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MEDIUM 6.8DOWNGRADE

CVE-2008-5263 is a medium-severity flaw (CVSS 6.8) affecting ksquirrel-libs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple stack-based buffer overflows in the mt_codec::getHdrHead function in kernel/kls_hdr/fmt_codec_hdr.cpp in ksquirrel-libs 0.8.0 allow context-dependent attackers to execute arbitrary code via a crafted Radiance RGBE image (aka .hdr file).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-02-26
Last modified	2026-06-16

Publisher (CNA): Flexera Software LLC · Vendor: dmitry baryshev

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

Am I affected?

Timeline

2009-02-26 16:17 UTCPublished CVE record published
2026-06-16 22:59 UTCUpdated Record last modified

dmitry baryshev ksquirrel-libs DOWNGRADE

Affected: 0.8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.8.0

1. Check installed version

apt-cache policy ksquirrel-libs || rpm -q ksquirrel-libs || ksquirrel-libs --version

2. No fixed release: DOWNGRADE to a release before 0.8.0 (Debian / Ubuntu)

apt-cache madison ksquirrel-libs sudo apt install ksquirrel-libs=<VERSION_BEFORE_0.8.0> sudo apt-mark hold ksquirrel-libs

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

dnf --showduplicates list ksquirrel-libs sudo dnf downgrade ksquirrel-libs-<VERSION_BEFORE_0.8.0> sudo dnf versionlock add ksquirrel-libs

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-2008-5263?

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

Is CVE-2008-5263 being exploited?

CVE-2008-5263 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-2008-5263 affect?

CVE-2008-5263 affects ksquirrel-libs. Severity is medium (CVSS 6.8). Multiple stack-based buffer overflows in the mt_codec::getHdrHead function in kernel/kls_hdr/fmt_codec_hdr.cpp in ksquirrel-libs 0.8.0 allow context-dependent attackers to execute arbitrary code via a crafted Radiance RGBE image (aka .hdr f

How urgent is CVE-2008-5263?

Priority 45/100. No elevated risk signals yet.

References

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