HOMEVULNERABILITIESCVE-2009-0290
MEDIUMPOC

CVE-2009-0290

CWE-22Published: January 27, 2009· Updated: Jun 16, 2026

6.8
CVSS v3.1

Official Description

Directory traversal vulnerability in common.php in SIR GNUBoard 4.31.03 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the g4_path parameter. NOTE: in some environments, this can be leveraged for remote code execution via a data: URI or a UNC share pathname.

NVD Source

Technical Analysis

CVE-2009-0290 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2009-0290. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors & Products

sir1 product(s)
gnuboard
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

All References (8)

Quick Facts

CVE IDCVE-2009-0290
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-22
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJan 27, 2009

Related CVEs (CWE-22)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2009-0290 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.