CVE-2003-1186: Buffer overflow in TelCondex SimpleWebServer 2.12.30210 Build3285 allows remote attackers to execute arbitrary

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HIGH 7.5DOWNGRADE

CVE-2003-1186 is a high-severity flaw (CVSS 7.5) affecting simplewebserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in TelCondex SimpleWebServer 2.12.30210 Build3285 allows remote attackers to execute arbitrary code via a long HTTP Referer header.

Why this priority

High severity
EPSS top 10%: 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	3.9% (top 10%)
CISA exploited list	No
Published	2003-10-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: telcondex

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

Am I affected?

Timeline

2003-10-29 05:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

telcondex simplewebserver DOWNGRADE

Affected: 2.12.30210_build3285

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.12.30210_build3285

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.12.30210_build3285 (Debian / Ubuntu)

apt-cache madison simplewebserver sudo apt install simplewebserver=<VERSION_BEFORE_2.12.30210_build3285> sudo apt-mark hold simplewebserver

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

dnf --showduplicates list simplewebserver sudo dnf downgrade simplewebserver-<VERSION_BEFORE_2.12.30210_build3285> sudo dnf versionlock add simplewebserver

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-2003-1186?

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

Is CVE-2003-1186 being exploited?

CVE-2003-1186 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-2003-1186 affect?

CVE-2003-1186 affects simplewebserver. Severity is high (CVSS 7.5). Buffer overflow in TelCondex SimpleWebServer 2.12.30210 Build3285 allows remote attackers to execute arbitrary code via a long HTTP Referer header.

How urgent is CVE-2003-1186?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2002-1907 MEDIUM 5.0 DOWNGRADE TelCondex SimpleWebServer 2.06.20817 allows remote attackers to cause a denial of service (crash) via a long H

References

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