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CVE-2015-2853

18
FAUCET Score

CVE-2015-2853 describes a session fixation vulnerability in the WebUI component of Blue Coat SSL Visibility Appliances (SV800, SV1800, SV2800, SV3800) running versions 3.6.x through 3.8.x prior to 3.8.4. This flaw allows remote attackers to hijack web sessions by supplying a predetermined session ID. The vulnerability carries a CVSS score of 6.8, indicating a medium severity. It can be exploited remotely with medium attack complexity, potentially leading to partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. While it has received some community discussion and media coverage, it is not listed on the CISA KEV catalog or Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.8.3CPE matchmatch criteria
cpe:2.3:o:blue_coat:ssl_visibility_appliance_sv3800_firmware:*:*:*:*:*:*:*:*
<= 3.8.3CPE matchmatch criteria
cpe:2.3:o:blue_coat:ssl_visibility_appliance_sv2800_firmware:*:*:*:*:*:*:*:*
<= 3.8.3CPE matchmatch criteria
cpe:2.3:o:blue_coat:ssl_visibility_appliance_sv1800_firmware:*:*:*:*:*:*:*:*
<= 3.8.3CPE matchmatch criteria
cpe:2.3:o:blue_coat:ssl_visibility_appliance_sv800_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 47th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bto.bluecoat.com / security-advisory/sa96
kb.cert.org / vuls/id/498348
US Government Resource
securityfocus.com / bid/74921