CVE-2004-2387: Buffer overflow in the HandleCPCCommand function of sercd before 2.3.1 and sredird 2.2.1 and earlier allows re

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HIGH 7.5DOWNGRADEDOWNGRADE

CVE-2004-2387 is a high-severity flaw (CVSS 7.5) affecting sredird, sercd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the HandleCPCCommand function of sercd before 2.3.1 and sredird 2.2.1 and earlier allows remote attackers to execute arbitrary code.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: denis sbragion · peter astrand

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:09 UTCUpdated Record last modified

denis sbragion sredird DOWNGRADE

Affected: 1.0 · 1.1.6 · 1.1.7 · 1.1.8 · 2.0 · 2.1 · 2.2 · 2.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison sredird sudo apt install sredird=<VERSION_BEFORE_1.0> sudo apt-mark hold sredird

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

dnf --showduplicates list sredird sudo dnf downgrade sredird-<VERSION_BEFORE_1.0> sudo dnf versionlock add sredird

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.

peter astrand sercd DOWNGRADE

Affected: 2.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.3.0 (Debian / Ubuntu)

apt-cache madison sercd sudo apt install sercd=<VERSION_BEFORE_2.3.0> sudo apt-mark hold sercd

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

dnf --showduplicates list sercd sudo dnf downgrade sercd-<VERSION_BEFORE_2.3.0> sudo dnf versionlock add sercd

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-2004-2387?

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

Is CVE-2004-2387 being exploited?

CVE-2004-2387 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-2004-2387 affect?

CVE-2004-2387 affects sredird, sercd. Severity is high (CVSS 7.5). Buffer overflow in the HandleCPCCommand function of sercd before 2.3.1 and sredird 2.2.1 and earlier allows remote attackers to execute arbitrary code.

How urgent is CVE-2004-2387?

Priority 49/100. High severity

Related CVEs

CVE-2004-2386 HIGH 7.5 DOWNGRADE DOWNGRADE Format string vulnerability in the LogMsg function in sercd before 2.3.1 and sredird 2.2.1 and earlier allows

References

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