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-2019-12587

27
FAUCET Score

CVE-2019-12587 describes a critical vulnerability in the EAP peer implementation of Espressif ESP-IDF (versions 2.0.0-4.0.0) and ESP8266_NONOS_SDK (versions 2.2.0-3.1.0). This flaw allows for the installation of a zero Pairwise Master Key (PMK) after EAP authentication, enabling attackers within radio range to replay, decrypt, or spoof frames through a rogue access point. Rated 8.1 HIGH on the CVSS scale, this vulnerability has a low attack complexity and requires no user interaction, leading to high confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, <= 4.0.0CPE matchmatch criteria
cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*
>= 2.2.0, <= 3.1.0CPE matchmatch criteria
cpe:2.3:a:espressif:esp8266_nonos_sdk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
53.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 62nd percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / espressif
Product
github.com / Matheus-Garbelini/esp32_esp8266_attacks
ExploitThird Party Advisory
matheus-garbelini.github.io / home/post/zero-pmk-installation
PatchThird Party Advisory