CVE-2004-0315: Buffer overflow in Avirt Voice 4.0 allows remote attackers to cause a denial of service (crash) and possibly e

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HIGH 10.0DOWNGRADE

CVE-2004-0315 is a high-severity flaw (CVSS 10.0) affecting voice. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Avirt Voice 4.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long GET request on port 1080.

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	6.1% (top 7%)
CISA exploited list	No
Published	2004-11-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: avirt

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

Am I affected?

Timeline

2004-11-23 05:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

avirt voice DOWNGRADE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison voice sudo apt install voice=<VERSION_BEFORE_4.0> sudo apt-mark hold voice

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

dnf --showduplicates list voice sudo dnf downgrade voice-<VERSION_BEFORE_4.0> sudo dnf versionlock add voice

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-2004-0315?

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

Is CVE-2004-0315 being exploited?

CVE-2004-0315 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-2004-0315 affect?

CVE-2004-0315 affects voice. Severity is high (CVSS 10.0). Buffer overflow in Avirt Voice 4.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long GET request on port 1080.

How urgent is CVE-2004-0315?

Priority 58/100. Critical severity; EPSS top 7%: very likely to be exploited

Related CVEs

CVE-2021-27236 CRITICAL 9.8 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8
CVE-2021-27235 MEDIUM 4.9 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8
CVE-2021-27234 CRITICAL 9.8 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8
CVE-2021-27233 MEDIUM 4.9 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8

References

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