CVE-2013-5959

Blue Coat ProxySG before 6.2.14.1, 6.3.x, 6.4.x, and 6.5 before 6.5.2 allows remote attackers to cause a denial of service (memory consumption and dropped connections) via a recursive href in an HTML page, which triggers a large number of HTTP RW pipeline pre-fetch requests.

Published: 2013-09-28 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-5959 is rated Moderate Risk (52.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.69%). Review affected assets and schedule remediation.

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-2013-5959

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 2025-03-30 0.51% 0.69% +0.18%
2 2025-03-29 0.70% 0.51% -0.19%
3 2024-12-17 — 0.70% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-5959

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2013-5959

Affected software / configurations for CVE-2013-5959

Vendor Product Version Raw CPE
bluecoat proxysgos 5.4 cpe:2.3:a:bluecoat:proxysgos:5.4:*:*:*:*:*:*:*
bluecoat proxysg <= 5.3 cpe:2.3:o:bluecoat:proxysg:*:*:*:*:*:*:*:*
bluecoat proxysgos 5.3 cpe:2.3:o:bluecoat:proxysgos:5.3:*:*:*:*:*:*:*
bluecoat proxysgos 5.5 cpe:2.3:o:bluecoat:proxysgos:5.5:*:*:*:*:*:*:*
bluecoat proxysgos 6.1 cpe:2.3:o:bluecoat:proxysgos:6.1:*:*:*:*:*:*:*
bluecoat proxysgos 6.2 cpe:2.3:o:bluecoat:proxysgos:6.2:*:*:*:*:*:*:*
bluecoat proxysgos 6.3 cpe:2.3:o:bluecoat:proxysgos:6.3:*:*:*:*:*:*:*
bluecoat proxysgos 6.4 cpe:2.3:o:bluecoat:proxysgos:6.4:*:*:*:*:*:*:*
bluecoat proxysgos 6.5 cpe:2.3:o:bluecoat:proxysgos:6.5:*:*:*:*:*:*:*

References for CVE-2013-5959

cvelogic Threat Intelligence