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CVE-2017-5405

17
FAUCET Score

CVE-2017-5405 describes a vulnerability where specific FTP response codes can lead to the use of uninitialized port values in FTP operations, impacting Firefox, Firefox ESR, and Thunderbird versions prior to 52 and 45.8, respectively. This medium-severity vulnerability has a CVSS score of 5.3, indicating a network-based attack with low complexity, requiring no user interaction, and potentially leading to a loss of confidentiality. There is no evidence of active exploitation, nor are there any public exploits available in Metasploit, Nuclei, or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
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

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.63%
Probability of exploitation in next 30 days
EPSS Percentile
83.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0263 is in the 76th percentile among its peer group of 23,690 CVEs.

Social Chatter

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

Patch Available

Vendor Patches (7)

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 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 7Fixed in: thunderbird-0:45.8.0-1.el7_3
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
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-5405Low

Mozilla: FTP response codes can cause use of uninitialized values for ports (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 TrackingVendor 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
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/96693
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037966
Third Party AdvisoryVDB Entry