CVE-2005-1952: Directory traversal vulnerability in Pico Server (pServ) 3.3 allows remote attackers to read arbitrary files a

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HIGH 7.5DOWNGRADE

CVE-2005-1952 is a high-severity flaw (CVSS 7.5) affecting pico server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in Pico Server (pServ) 3.3 allows remote attackers to read arbitrary files and execute arbitrary commands via a /./ (slash dot slash) before each .. (dot dot) sequence in the URL, which results in an incorrect directory depth count.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2005-06-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: pico server

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

Am I affected?

Timeline

2005-06-16 04:00 UTCPublished CVE record published
2026-06-16 22:13 UTCUpdated Record last modified

pico server pico server DOWNGRADE

Affected: 3.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3

1. Check installed version

apt-cache policy pico-server || rpm -q pico-server || pico-server --version

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

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

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

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

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-2005-1952?

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

Is CVE-2005-1952 being exploited?

CVE-2005-1952 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-2005-1952 affect?

CVE-2005-1952 affects pico server. Severity is high (CVSS 7.5). Directory traversal vulnerability in Pico Server (pServ) 3.3 allows remote attackers to read arbitrary files and execute arbitrary commands via a /./ (slash dot slash) before each .. (dot dot) sequence in the URL, which results in an incorr

How urgent is CVE-2005-1952?

Priority 47/100. High severity

Related CVEs

CVE-2005-1953 HIGH 7.5 DOWNGRADE Heap-based buffer overflow in the CGI extension for Pico Server (pServ) 3.3 allows remote attackers to execute
CVE-2005-1367 HIGH 7.5 DOWNGRADE Pico Server (pServ) 3.2 and earlier allows local users to read arbitrary files as the pServ user via a symlink
CVE-2005-1366 HIGH 7.5 DOWNGRADE Pico Server (pServ) 3.2 and earlier allows remote attackers to obtain the source code for CGI scripts via "dir
CVE-2005-1365 HIGH 10.0 DOWNGRADE Pico Server (pServ) 3.2 and earlier allows remote attackers to execute arbitrary commands via a URL with multi
CVE-2002-2295 HIGH 7.5 DOWNGRADE Buffer overflow in Pico Server (pServ) 2.0 beta 1 through beta 5 allows remote attackers to cause a denial of

References

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