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CVE-2017-7806

24
FAUCET Score

CVE-2017-7806 describes a use-after-free vulnerability in Mozilla Firefox versions prior to 55. This flaw occurs when the layer manager is prematurely freed during the rendering of specific SVG content, leading to a potentially exploitable crash. The vulnerability carries a CVSS v3 score of 7.5 (HIGH), indicating it can be exploited remotely with low attack complexity, resulting in high availability impact. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for a denial-of-service or other impacts remains.

Impacted Technologies

VendorProductVersion(s)CPE
< 55.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 55CPE 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:N/I:N/A:H

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

Exploit Intelligence

EPSS Score
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
79.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0203 is in the 63rd 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

Vendor Advisories (1)

redhatCVE-2017-7806Important

Mozilla: Use-after-free in layer manager with SVG (MFSA 2017-18)

Aug 8, 2017

References

bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatch
mozilla.org / security/advisories/mfsa2017-18
Vendor Advisory
securityfocus.com / bid/100389
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039124
Third Party AdvisoryVDB Entry