CVE-2007-0160: Stack-based buffer overflow in the LiveJournal support (hooks/ljhook.cc) in CenterICQ 4.9.11 through 4.21.0, w

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HIGH 7.5DOWNGRADE

CVE-2007-0160 is a high-severity flaw (CVSS 7.5) affecting centericq. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the LiveJournal support (hooks/ljhook.cc) in CenterICQ 4.9.11 through 4.21.0, when using unofficial LiveJournal servers, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by adding the victim as a friend and using long (1) username and (2) real name strings.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-119
Published	2007-01-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: centericq

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

Am I affected?

Timeline

2007-01-10 00:28 UTCPublished CVE record published
2026-06-16 22:35 UTCUpdated Record last modified

centericq centericq DOWNGRADE

Affected: 4.9.11 · 4.9.12 · 4.12 · 4.13 · 4.14 · 4.20 · 4.21

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.9.11

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.9.11 (Debian / Ubuntu)

apt-cache madison centericq sudo apt install centericq=<VERSION_BEFORE_4.9.11> sudo apt-mark hold centericq

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

dnf --showduplicates list centericq sudo dnf downgrade centericq-<VERSION_BEFORE_4.9.11> sudo dnf versionlock add centericq

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-2007-0160?

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

Is CVE-2007-0160 being exploited?

CVE-2007-0160 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-2007-0160 affect?

CVE-2007-0160 affects centericq. Severity is high (CVSS 7.5). Stack-based buffer overflow in the LiveJournal support (hooks/ljhook.cc) in CenterICQ 4.9.11 through 4.21.0, when using unofficial LiveJournal servers, allows remote attackers to cause a denial of service (crash) and possibly execute arbitr

How urgent is CVE-2007-0160?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

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References

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