CVE-2007-3612: Stack-based buffer overflow in Visual IRC (ViRC) 2.0 allows remote IRC servers to execute arbitrary code via a

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HIGH 7.5DOWNGRADE

CVE-2007-3612 is a high-severity flaw (CVSS 7.5) affecting visual irc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Visual IRC (ViRC) 2.0 allows remote IRC servers to execute arbitrary code via a long response to a JOIN command.

Why this priority

High severity
EPSS top 8%: 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	4.9% (top 8%)
CISA exploited list	No
Published	2007-07-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: visual irc

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

Am I affected?

Timeline

2007-07-06 19:30 UTCPublished CVE record published
2026-06-16 22:42 UTCUpdated Record last modified

visual irc visual irc DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

apt-cache policy visual-irc || rpm -q visual-irc || visual-irc --version

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison visual-irc sudo apt install visual-irc=<VERSION_BEFORE_2.0> sudo apt-mark hold visual-irc

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

dnf --showduplicates list visual-irc sudo dnf downgrade visual-irc-<VERSION_BEFORE_2.0> sudo dnf versionlock add visual-irc

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: ViRC 2.0 - JOIN Response Remote Overwrite (SEH)

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-2007-3612?

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

Is CVE-2007-3612 being exploited?

CVE-2007-3612 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-2007-3612 affect?

CVE-2007-3612 affects visual irc. Severity is high (CVSS 7.5). Stack-based buffer overflow in Visual IRC (ViRC) 2.0 allows remote IRC servers to execute arbitrary code via a long response to a JOIN command.

How urgent is CVE-2007-3612?

Priority 54/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference

References

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