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-2017-17843

20
FAUCET Score

CVE-2017-17843 describes a medium-severity vulnerability in Enigmail versions prior to 1.9.9, affecting Debian Linux and Enigmail installations. The flaw allows remote attackers to force the use of an unintended public key for encryption due to incorrect regular expressions used in extracting email addresses from comma-separated lists, potentially leading to a homograph attack. While the attack complexity is high, it requires no user interaction and could result in a high impact on integrity, though confidentiality and availability are not affected. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

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

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.12%
Probability of exploitation in next 30 days
EPSS Percentile
62.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 25th percentile among its peer group of 19,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

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
debian.org / security/2017/dsa-4070
Third Party Advisory
mail-archive.com / enigmail-users%40enigmail.net/msg04280.html