Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2017-5404

51
FAUCET Score

CVE-2017-5404 is a critical use-after-free vulnerability affecting Mozilla Firefox (versions < 52 and ESR < 45.8) and Thunderbird (versions < 52 and < 45.8). This flaw arises from improper handling of selections involving native anonymous trees, leading to a potentially exploitable crash. With a CVSS score of 9.8 (CRITICAL), it presents a high risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, a public exploit (EDB-41660) exists, and the vulnerability has garnered significant community discussion, indicating awareness and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
17.48%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-41660 · Mar 20, 2017
This CVE's current EPSS score of 0.1748 is in the 93rd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:45.8.0-2.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:45.8.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:45.8.0-2.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:45.8.0-1.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:52.0-4.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:45.8.0-1.el7_3
View patch

Vendor Advisories (1)

redhatCVE-2017-5404Critical

Mozilla: Use-after-free working with ranges in selections (MFSA 2017-06)

Mar 7, 2017

References

rhn.redhat.com / errata/RHSA-2017-0459.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0461.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0498.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatchVendor Advisory
security.gentoo.org / glsa/201705-06
Third Party Advisory
security.gentoo.org / glsa/201705-07
Third Party Advisory
debian.org / security/2017/dsa-3805
Third Party Advisory
debian.org / security/2017/dsa-3832
Third Party Advisory
exploit-db.com / exploits/41660
ExploitThird Party AdvisoryVDB Entry
mozilla.org / security/advisories/mfsa2017-05
Vendor Advisory
mozilla.org / security/advisories/mfsa2017-06
Vendor Advisory
mozilla.org / security/advisories/mfsa2017-07
Vendor Advisory
mozilla.org / security/advisories/mfsa2017-09
Vendor Advisory
securityfocus.com / bid/96664
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037966
Third Party AdvisoryVDB Entry