CRITICAL
CVE-2004-1993
NVD-CWE-OtherPublished: May 4, 2004· Updated: Jun 16, 2026
10.0
CVSS v3.1
Official Description
The patch to the checklogin function in omail.pl for omail webmail 0.98.5 is incomplete, which allows remote attackers to execute arbitrary commands via shell metacharacters such as "`" (backticks) in the password.
Technical Analysis
CVE-2004-1993 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.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:L/Au:N/C:C/I:C/A:C
Affected Vendors & Products
omail1 product(s)
omail webmail
Source: NVD CPE · 3 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (8)
→
http://secunia.com/advisories/9585Vendor Advisory
→
http://www.securityfocus.com/bid/10274Vendor Advisory
→
http://secunia.com/advisories/9585Vendor Advisory
→
http://www.securityfocus.com/bid/10274Vendor Advisory
Quick Facts
CVE IDCVE-2004-1993
CVSS Score10.0 / 10
SeverityCRITICAL
WeaknessNVD-CWE-Other
CISA KEVNo
Affected1 vendor(s)
PublishedMay 4, 2004
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2004-1993 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.