CVE-2003-0409: Buffer overflow in BRS WebWeaver 1.04 and earlier allows remote attackers to cause a denial of service (crash)

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HIGH 10.0DOWNGRADE

CVE-2003-0409 is a high-severity flaw (CVSS 10.0) affecting webweaver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in BRS WebWeaver 1.04 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long HTTP (1) POST or (2) HEAD request.

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	8.0% (top 5%)
CISA exploited list	No
Published	2003-06-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: brs

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

Am I affected?

Timeline

2003-06-30 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

brs webweaver DOWNGRADE

Affected: 1.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.4 (Debian / Ubuntu)

apt-cache madison webweaver sudo apt install webweaver=<VERSION_BEFORE_1.0.4> sudo apt-mark hold webweaver

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

dnf --showduplicates list webweaver sudo dnf downgrade webweaver-<VERSION_BEFORE_1.0.4> sudo dnf versionlock add webweaver

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: BRS Webweaver 1.0 4 - POST / HEAD Denial of Service

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-2003-0409?

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

Is CVE-2003-0409 being exploited?

CVE-2003-0409 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-2003-0409 affect?

CVE-2003-0409 affects webweaver. Severity is high (CVSS 10.0). Buffer overflow in BRS WebWeaver 1.04 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long HTTP (1) POST or (2) HEAD request.

How urgent is CVE-2003-0409?

Priority 64/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2003-1165 MEDIUM 5.0 DOWNGRADE Buffer overflow in BRS WebWeaver 1.06 and earlier allows remote attackers to cause a denial of service (crash)
CVE-2002-1546 HIGH 7.5 DOWNGRADE BRS WebWeaver Web Server 1.01 allows remote attackers to bypass password protections for files and directories
CVE-2001-0453 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in BRS WebWeaver HTTP server allows remote attackers to read arbitrary files
CVE-2001-0452 MEDIUM 5.0 DOWNGRADE BRS WebWeaver FTP server before 0.64 Beta allows remote attackers to obtain the real pathname of the server vi

References

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