CVE-2005-0657: Directory traversal vulnerability in Computalynx CProxy 3.3.x and 3.4.x through 3.4.4 allows remote attackers

This month

MEDIUM 6.4DOWNGRADE

CVE-2005-0657 is a medium-severity flaw (CVSS 6.4) affecting cproxy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in Computalynx CProxy 3.3.x and 3.4.x through 3.4.4 allows remote attackers to read arbitrary files or cause a denial of service (application crash) via a .. (dot dot) in an HTTP request.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Published	2005-05-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: computalynx

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

Am I affected?

Timeline

2005-05-02 04:00 UTCPublished CVE record published
2026-06-16 22:11 UTCUpdated Record last modified

computalynx cproxy DOWNGRADE

Affected: 3.3 · 3.4 · 3.4.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3

1. Check installed version

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

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

apt-cache madison cproxy sudo apt install cproxy=<VERSION_BEFORE_3.3> sudo apt-mark hold cproxy

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

dnf --showduplicates list cproxy sudo dnf downgrade cproxy-<VERSION_BEFORE_3.3> sudo dnf versionlock add cproxy

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-2005-0657?

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

Is CVE-2005-0657 being exploited?

CVE-2005-0657 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-2005-0657 affect?

CVE-2005-0657 affects cproxy. Severity is medium (CVSS 6.4). Directory traversal vulnerability in Computalynx CProxy 3.3.x and 3.4.x through 3.4.4 allows remote attackers to read arbitrary files or cause a denial of service (application crash) via a .. (dot dot) in an HTTP request.

How urgent is CVE-2005-0657?

Priority 47/100. Public exploit reference

References

← Back to latest CVEs