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-2017-18187

30
FAUCET Score

CVE-2017-18187 is a critical vulnerability affecting ARM mbed TLS before version 2.7.0, specifically within the ssl_parse_client_psk_identity() function in library/ssl_srv.c, leading to a bounds-check bypass via an integer overflow. With a CVSS score of 9.8, this vulnerability allows for remote, low-complexity attacks without user interaction, potentially resulting in complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.7.0CPE matchmatch criteria
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
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

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0312 is in the 78th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / ARMmbed/mbedtls/blob/master/ChangeLog
Third Party Advisory
github.com / ARMmbed/mbedtls/commit/83c9f495ffe70c7dd280b41fdfd4881485a3bc28
PatchThird Party Advisory
security.gentoo.org / glsa/201804-19
Third Party Advisory
usn.ubuntu.com / 4267-1
debian.org / security/2018/dsa-4138
Third Party Advisory
debian.org / security/2018/dsa-4147
Third Party Advisory
securityfocus.com / bid/103055
Third Party AdvisoryVDB Entry