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CVE-2017-4963

23
FAUCET Score

CVE-2017-4963 is a session fixation vulnerability affecting Cloud Foundry Foundation Cloud Foundry (v252 and earlier) and UAA (various versions) when configured with external SAML or OpenID Connect identity providers. This high-severity flaw (CVSS 8.1) allows an attacker to potentially hijack user sessions due to a weakness in how sessions are managed. Despite its significant potential impact (high confidentiality, integrity, and availability), there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 252CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_cf-release:*:*:*:*:*:*:*:*
>= 2.0.0, <= 2.7.4.12CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*
>= 3.0.0, <= 3.11.0CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*
<= 26CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_uaa-release:*:*:*:*:*:bosh:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
56.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 22nd percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cloudfoundry.org / cve-2017-4963
Vendor Advisory