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CVE-2017-7835

22
FAUCET Score

CVE-2017-7835 describes a mixed content blocking bypass in Firefox versions prior to 57, where insecure HTTP sub-resources could be loaded on secure HTTPS pages if they redirected from HTTPS to HTTP. This vulnerability has a CVSS score of 7.3 (HIGH), indicating that an unauthenticated attacker could achieve low impact on confidentiality, integrity, and availability with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the flaw could allow malicious scripts or content to bypass security measures.

Impacted Technologies

VendorProductVersion(s)CPE
<= 56.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 57CPE match
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.3HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
72.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 54th percentile among its peer group of 51,506 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

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPermissions Required
mozilla.org / security/advisories/mfsa2017-24
Vendor Advisory
securityfocus.com / bid/101832
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039803
Third Party AdvisoryVDB Entry