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CVE-2017-17847

23
FAUCET Score

CVE-2017-17847 is a signature spoofing vulnerability in Enigmail before version 1.9.9, affecting Debian Linux and Enigmail installations. It allows an attacker to mislead users by presenting an attachment signature as a full message signature, specifically when a signed email is embedded as an attachment. With a CVSS score of 7.5 (High), this vulnerability has a low attack complexity and high integrity impact, as it can deceive users about message authenticity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.9.9CPE matchmatch criteria
cpe:2.3:a:enigmail:enigmail:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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:H/A:N

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

Exploit Intelligence

EPSS Score
1.20%
Probability of exploitation in next 30 days
EPSS Percentile
64.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 44th percentile among its peer group of 51,455 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

Remediation records are not available for this CVE.

References

enigmail.net / download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf
Vendor Advisory
lists.debian.org / debian-lts-announce/2017/12/msg00021.html
lists.debian.org / debian-security-announce/2017/msg00333.html
Third Party Advisory
sourceforge.net / p/enigmail/bugs/709
Third Party Advisory
debian.org / security/2017/dsa-4070
Third Party Advisory
mail-archive.com / enigmail-users%40enigmail.net/msg04280.html