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CVE-2016-5288

21
FAUCET Score

CVE-2016-5288 describes a medium-severity information disclosure vulnerability affecting Mozilla Firefox versions 48 and 49. Specifically, if the e10s feature is disabled, malicious web content could access sensitive data stored in the HTTP cache, potentially revealing visited URLs and page content. The vulnerability has a CVSS score of 5.9, indicating a network-based attack with high impact on confidentiality but requiring high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 49.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 56th percentile among its peer group of 19,955 CVEs.

Social Chatter

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

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-5288Moderate

firefox: Web content can read cache entries

Oct 20, 2016

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
mozilla.org / security/advisories/mfsa2016-87
Vendor Advisory
securityfocus.com / bid/93810
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037077
Third Party AdvisoryVDB Entry