HOMEVULNERABILITIESCVE-2018-12939
MEDIUM

CVE-2018-12939

CWE-22Published: July 31, 2018· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

A directory traversal flaw in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows an authenticated attacker to write to (or potentially delete) arbitrary files via a .. (dot dot) in the "op/op.UploadChunks.php" "qquuid" parameter. NOTE: this can be leveraged to execute arbitrary code by using CVE-2018-12940.

NVD Source

Technical Analysis

CVE-2018-12939 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

seeddms1 product(s)
seeddms
Source: NVD CPE · 1 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

PATCHhttps://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOG
PATCHhttps://www.contextis.com/resources/advisories/cve-2018-12939
PATCHhttps://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOG
PATCHhttps://www.contextis.com/resources/advisories/cve-2018-12939

All References (4)

→
https://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOGPatch · Release Notes · Third Party Advisory
→
https://www.contextis.com/resources/advisories/cve-2018-12939Patch · Third Party Advisory
→
https://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOGPatch · Release Notes · Third Party Advisory
→
https://www.contextis.com/resources/advisories/cve-2018-12939Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2018-12939
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedJul 31, 2018

Related CVEs (CWE-22)

CVE-2026-41211
10.0
CVE-2007-5815
10.0
CVE-2008-1310
10.0
CVE-2024-37902
10.0
CVE-2008-4592
10.0
CVE-2007-5005
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-12939 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. CVE data is provided under the NVD usage policy.
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