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CVE-2017-7829

17
FAUCET Score

CVE-2017-7829 describes a sender email address spoofing vulnerability in Mozilla Thunderbird versions prior to 52.5.2, affecting canonical, debian, mozilla, and redhat distributions. An attacker can display an arbitrary sender address to recipients by preceding the real sender's address with a null character in the display string. This medium-severity vulnerability (CVSS 5.3) has a low attack complexity and can lead to information integrity issues (I:L), but does not impact confidentiality or availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 52.5.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
7.4CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_aus:7.4:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.4CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*

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:N/I:L/A:N

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

Exploit Intelligence

EPSS Score
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 63rd percentile among its peer group of 23,705 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 (3)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:52.5.2-1.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:52.5.2-1.el7_4
View patch

Vendor Advisories (1)

redhatCVE-2017-7829Low

Mozilla: From address with encoded null character is cut off in message header display

Dec 22, 2012

References

access.redhat.com / errata/RHSA-2018:0061
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatch
lists.debian.org / debian-lts-announce/2017/12/msg00026.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3529-1
Third Party Advisory
debian.org / security/2017/dsa-4075
Third Party Advisory
mozilla.org / security/advisories/mfsa2017-30
Vendor Advisory
securityfocus.com / bid/102258
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040123
Third Party AdvisoryVDB Entry