CVE-2003-1165: Buffer overflow in BRS WebWeaver 1.06 and earlier allows remote attackers to cause a denial of service (crash)

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MEDIUM 5.0DOWNGRADE

CVE-2003-1165 is a medium-severity flaw (CVSS 5.0) 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 1.06 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an HTTP request with a long User-Agent header.

Why this priority

EPSS top 7%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	5.6% (top 7%)
CISA exploited list	No
Published	2003-12-31
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

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

brs webweaver DOWNGRADE

Affected: 0.49_beta · 0.50_beta · 0.51_beta · 0.52_beta · 0.60_beta · 0.61_beta · 0.62_beta · 0.63_beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.49_beta

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.49_beta (Debian / Ubuntu)

apt-cache madison webweaver sudo apt install webweaver=<VERSION_BEFORE_0.49_beta> sudo apt-mark hold webweaver

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

dnf --showduplicates list webweaver sudo dnf downgrade webweaver-<VERSION_BEFORE_0.49_beta> 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 1.06 - HTTPd 'User-Agent' Remote 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-2003-1165?

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

Is CVE-2003-1165 being exploited?

CVE-2003-1165 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-2003-1165 affect?

CVE-2003-1165 affects webweaver. Severity is medium (CVSS 5.0). Buffer overflow in BRS WebWeaver 1.06 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an HTTP request with a long User-Agent header.

How urgent is CVE-2003-1165?

Priority 46/100. EPSS top 7%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2003-0409 HIGH 10.0 DOWNGRADE Buffer overflow in BRS WebWeaver 1.04 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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