CVE-2014-4607: Integer overflow in the LZO algorithm variant in Oberhumer liblzo2 and lzo-2 before 2.07 on 32-bit platforms m

Q: How do I fix CVE-2014-4607?

liblzo2: upgrade to 2.07; lzo2: upgrade to 2.07. Exact commands for each OS are on this page.

Q: Is CVE-2014-4607 being exploited?

CVE-2014-4607 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-2014-4607 affect?

CVE-2014-4607 affects liblzo2, lzo2. Severity is high (CVSS 8.8). Integer overflow in the LZO algorithm variant in Oberhumer liblzo2 and lzo-2 before 2.07 on 32-bit platforms might allow remote attackers to execute arbitrary code via a crafted Literal Run.

Q: How urgent is CVE-2014-4607?

Priority 59/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

This month

HIGH 8.8UPGRADEUPGRADE

CVE-2014-4607 is a high-severity flaw (CVSS 8.8) affecting liblzo2, lzo2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Integer overflow in the LZO algorithm variant in Oberhumer liblzo2 and lzo-2 before 2.07 on 32-bit platforms might allow remote attackers to execute arbitrary code via a crafted Literal Run.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	5.3% (top 7%)
CISA exploited list	No
Weakness	CWE-190
Published	2020-02-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: oberhumer

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

Am I affected?

Timeline

2020-02-12 14:15 UTCPublished CVE record published
2026-06-17 00:10 UTCUpdated Record last modified

oberhumer liblzo2 UPGRADE

Affected: < 2.07

Fixed in: 2.07

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy liblzo2 || rpm -q liblzo2 || liblzo2 --version

2. UPGRADE to 2.07 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade liblzo2

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade liblzo2

Note

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

oberhumer lzo2 UPGRADE

Affected: < 2.07

Fixed in: 2.07

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lzo2 || rpm -q lzo2 || lzo2 --version

2. UPGRADE to 2.07 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lzo2

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lzo2

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-2014-4607?

liblzo2: upgrade to 2.07; lzo2: upgrade to 2.07. Exact commands for each OS are on this page.

Is CVE-2014-4607 being exploited?

CVE-2014-4607 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-2014-4607 affect?

CVE-2014-4607 affects liblzo2, lzo2. Severity is high (CVSS 8.8). Integer overflow in the LZO algorithm variant in Oberhumer liblzo2 and lzo-2 before 2.07 on 32-bit platforms might allow remote attackers to execute arbitrary code via a crafted Literal Run.

How urgent is CVE-2014-4607?

Priority 59/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

References

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