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CVE-2017-5382

21
FAUCET Score

CVE-2017-5382 describes a vulnerability in Firefox versions prior to 51 where the RSS feed preview feature could expose internal system information through error messages generated by privileged content. This vulnerability carries a CVSSv3 score of 7.5 (HIGH), indicating a network-based attack with low complexity that could lead to high confidentiality impact without requiring user interaction or privileges. Despite its high severity, there is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 51.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 51CPE match
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

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 54th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Patch Available

Vendor Patches (1)

mozillapatch availablevia nvd_reference
View patch

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPatch
mozilla.org / security/advisories/mfsa2017-01
Vendor Advisory
securityfocus.com / bid/95763
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037693
Third Party AdvisoryVDB Entry