CVE-2001-0949: Buffer overflows in forms.exe CGI program in ValiCert Enterprise Validation Authority (EVA) Administration Ser

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HIGH 7.5DOWNGRADE

CVE-2001-0949 is a high-severity flaw (CVSS 7.5) affecting enterprise validation authority. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflows in forms.exe CGI program in ValiCert Enterprise Validation Authority (EVA) Administration Server 3.3 through 4.2.1 allows remote attackers to execute arbitrary code via long arguments to the parameters (1) Mode, (2) Certificate_File, (3) useExpiredCRLs, (4) listenLength, (5) maxThread, (6) maxConnPerSite, (7) maxMsgLen, (8) exitTime, (9) blockTime, (10) nextUpdatePeriod, (11) buildLocal, (12) maxOCSPValidityPeriod, (13) extension

Why this priority

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

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.1% (top 9%)
CISA exploited list	No
Published	2001-12-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: valicert

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

Am I affected?

Timeline

2001-12-04 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

valicert enterprise validation authority DOWNGRADE

Affected: 3.3 · 3.4 · 3.5 · 3.6 · 3.7 · 3.8 · 3.9 · 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3

1. Check installed version

apt-cache policy enterprise-validation-authority || rpm -q enterprise-validation-authority || enterprise-validation-authority --version

2. No fixed release: DOWNGRADE to a release before 3.3 (Debian / Ubuntu)

apt-cache madison enterprise-validation-authority sudo apt install enterprise-validation-authority=<VERSION_BEFORE_3.3> sudo apt-mark hold enterprise-validation-authority

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

dnf --showduplicates list enterprise-validation-authority sudo dnf downgrade enterprise-validation-authority-<VERSION_BEFORE_3.3> sudo dnf versionlock add enterprise-validation-authority

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-2001-0949?

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

Is CVE-2001-0949 being exploited?

CVE-2001-0949 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-2001-0949 affect?

CVE-2001-0949 affects enterprise validation authority. Severity is high (CVSS 7.5). Buffer overflows in forms.exe CGI program in ValiCert Enterprise Validation Authority (EVA) Administration Server 3.3 through 4.2.1 allows remote attackers to execute arbitrary code via long arguments to the parameters (1) Mode, (2) Certifi

How urgent is CVE-2001-0949?

Priority 49/100. High severity; EPSS top 9%: very likely to be exploited

Related CVEs

CVE-2001-0950 HIGH 7.5 UPGRADE ValiCert Enterprise Validation Authority (EVA) Administration Server 3.3 through 4.2.1 uses insufficiently ran
CVE-2001-0948 HIGH 7.5 DOWNGRADE Cross-site scripting (CSS) vulnerability in ValiCert Enterprise Validation Authority (EVA) 3.3 through 4.2.1 a
CVE-2001-0947 HIGH 7.5 DOWNGRADE Forms.exe CGI program in ValiCert Enterprise Validation Authority (EVA) 3.3 through 4.2.1 allows remote attack

References

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