CVE-2013-3945: The MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers to execute arbitrary code via a

Q: How do I fix CVE-2013-3945?

mrsid: upgrade to 4.37. Exact commands for each OS are on this page.

Q: Is CVE-2013-3945 being exploited?

CVE-2013-3945 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-2013-3945 affect?

CVE-2013-3945 affects mrsid. Severity is high (CVSS 7.8). The MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers to execute arbitrary code via a nband tag.

This month

HIGH 7.8UPGRADE

CVE-2013-3945 is a high-severity flaw (CVSS 7.8) affecting mrsid. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers to execute arbitrary code via a nband tag.

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	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-20
Published	2020-01-02
Last modified	2026-06-16

Publisher (CNA): Flexera Software LLC · Vendor: extensis

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

Am I affected?

Timeline

2020-01-02 19:15 UTCPublished CVE record published
2026-06-16 23:56 UTCUpdated Record last modified

extensis mrsid UPGRADE

Affected: < 4.37

Fixed in: 4.37

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.37 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mrsid

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-2013-3945?

mrsid: upgrade to 4.37. Exact commands for each OS are on this page.

Is CVE-2013-3945 being exploited?

CVE-2013-3945 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-2013-3945 affect?

CVE-2013-3945 affects mrsid. Severity is high (CVSS 7.8). The MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers to execute arbitrary code via a nband tag.

How urgent is CVE-2013-3945?

Priority 48/100. High severity

Related CVEs

CVE-2013-3946 HIGH 7.8 UPGRADE Heap-based buffer overflow in the MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers t
CVE-2013-3944 HIGH 7.8 UPGRADE Stack-based buffer overflow in the MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers

References

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