CVE-2013-5959
CVE-2013-5959 is a high-severity vulnerability in Bluecoat Proxysgos with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 2.0 base score 7.1)
- EPSS exploit prediction: 2% (72nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Bluecoat Proxysgos
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2013-5959?
- CVE-2013-5959 has a CVSS 2.0 base score of 7.1, rated high severity.
- Is CVE-2013-5959 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-5959?
- CVE-2013-5959 primarily affects Bluecoat Proxysgos. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2013-5959?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2013-5959 published?
- CVE-2013-5959 was published on 2013-09-28 and last updated on 2026-06-16.
References
- http://osvdb.org/97767
- http://secunia.com/advisories/54991
- http://www.securitytracker.com/id/1029088
- https://kb.bluecoat.com/index?page=content&id=SA75
Affected products (9)
- cpe:2.3:a:bluecoat:proxysgos:5.4:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysg:*:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:5.3:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:5.5:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:6.1:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:6.2:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:6.3:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:6.4:*:*:*:*:*:*:*
- cpe:2.3:o:bluecoat:proxysgos:6.5:*:*:*:*:*:*:*
More vulnerabilities in Bluecoat Proxysgos
- CVE-2014-2033 — High (CVSS 7.9): The caching feature in SGOS in Blue Coat ProxySG 5.5 through 5.5.11.3, 6.1 through 6.1.6.3, 6.2 through 6.2.15.3, 6.4…
All CVEs affecting Bluecoat Proxysgos →
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- CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.