LOW
CVE-2008-4640
CWE-20Published: October 21, 2008· Updated: Jun 16, 2026
3.6
CVSS v3.1
Official Description
The DoCommand function in jhead.c in Matthias Wandel jhead 2.84 and earlier allows local users to delete arbitrary files via vectors involving a modified input filename in which (1) a final "z" character is replaced by a "t" character or (2) a final "t" character is replaced by a "z" character.
Technical Analysis
CVE-2008-4640 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityP
AvailabilityP
AV:L/AC:L/Au:N/C:N/I:P/A:P
Affected Vendors & Products
sentex1 product(s)
jhead
Source: NVD CPE · 20 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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Rapid7 / Metasploit
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PacketStorm
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (8)
Quick Facts
CVE IDCVE-2008-4640
CVSS Score3.6 / 10
SeverityLOW
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedOct 21, 2008
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2008-4640 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.