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CVE-2016-7966

25
FAUCET Score

CVE-2016-7966 describes an HTML injection vulnerability in KMail's plaintext viewer, affecting products like Debian, Fedora, KDE, and SUSE. An attacker could inject limited HTML code via a specially crafted URL containing a quote character, though the inability to use equals signs or spaces restricted full HTML functionality. With a CVSS score of 7.3 (HIGH), this vulnerability has a low attack complexity and could lead to low impacts on confidentiality, integrity, and 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
<= 4.4.0CPE matchmatch criteria
cpe:2.3:a:kde:kmail:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise:12.0:*:*:*:*:*:*:*

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
2.34%
Probability of exploitation in next 30 days
EPSS Percentile
81.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0234 is in the 68th percentile among its peer group of 51,485 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 Advisories (1)

redhatCVE-2016-7966Low

kdepim: HTML injection in plain text viewer of KMail

Oct 4, 2016

References

lists.opensuse.org / opensuse-updates/2016-10/msg00065.html
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/QNMM5TVPTJQFPJ3YDF4DPXDFW3GQLWLY
debian.org / security/2016/dsa-3697
Third Party Advisory
openwall.com / lists/oss-security/2016/10/05/1
Third Party Advisory
securityfocus.com / bid/93360
Third Party AdvisoryVDB Entry