CVE-2013-6955

Exp

webman/imageSelector.cgi in Synology DiskStation Manager (DSM) 4.0 before 4.0-2259, 4.2 before 4.2-3243, and 4.3 before 4.3-3810 Update 1 allows remote attackers to append data to arbitrary files, and consequently execute arbitrary code, via a pathname in the SLICEUPLOAD X-TMP-FILE HTTP header.

Published: 2014-01-09 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-6955 is rated High Exploit Risk (90.5/100): CVSS Critical severity, with high exploitation likelihood (EPSS 83.31%, 99th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2013-6955

EDB-ID Source Kind Published Link
30470 exploit_db edb 2013-12-24 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-6955

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-09-13 82.50% 83.31% +0.81%
2 2025-09-07 86.17% 82.50% -3.67%
3 2025-07-30 — 86.17% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-6955

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2013-6955

Affected software / configurations for CVE-2013-6955

Vendor Product Version Raw CPE
synology diskstation_manager 4.0 cpe:2.3:o:synology:diskstation_manager:4.0:*:*:*:*:*:*:*
synology diskstation_manager 4.2 cpe:2.3:o:synology:diskstation_manager:4.2:*:*:*:*:*:*:*
synology diskstation_manager 4.3 cpe:2.3:o:synology:diskstation_manager:4.3:*:*:*:*:*:*:*
synology diskstation_manager 4.3-3810 cpe:2.3:o:synology:diskstation_manager:4.3-3810:*:*:*:*:*:*:*

References for CVE-2013-6955

URL Tags
http://www.kb.cert.org/vuls/id/615910 US Government Resource
cvelogic Threat Intelligence