CVE-2015-5537

The SSL layer of the HTTPS service in Siemens RuggedCom ROS before 4.2.0 and ROX II does not properly implement CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a different vulnerability than CVE-2014-3566.

Published: 2015-08-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5537 is rated Low Risk (39.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.14%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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

Exploit prediction scoring system (EPSS) score for CVE-2015-5537

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 2026-06-15 0.32% 1.14% +0.82%
2 2025-06-08 0.60% 0.32% -0.28%
3 2025-03-30 — 0.60% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5537

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2015-5537

Affected software / configurations for CVE-2015-5537

Vendor Product Version Raw CPE
siemens ruggedcom_rox_ii_firmware — cpe:2.3:o:siemens:ruggedcom_rox_ii_firmware:-:*:*:*:*:*:*:*
siemens ruggedcom_rugged_operating_system < 4.2.0 cpe:2.3:o:siemens:ruggedcom_rugged_operating_system:*:*:*:*:*:*:*:*

References for CVE-2015-5537

URL Tags
http://www.securitytracker.com/id/1033022 Broken Link Third Party Advisory VDB Entry
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-396873.pdf Broken Link Patch Vendor Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-15-202-03A Broken Link Third Party Advisory US Government Resource
cvelogic Threat Intelligence