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CVE-2020-13594

21
FAUCET Score

CVE-2020-13594 is a denial-of-service vulnerability affecting Espressif ESP-IDF 4.2 and earlier on ESP32 devices. An attacker within radio range can crash a vulnerable device by sending a specially crafted Bluetooth Low Energy (BLE) connection request packet. This medium-severity vulnerability (CVSS 6.5) requires adjacent network access and low attack complexity, resulting in a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2CPE matchmatch criteria
cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 81st percentile among its peer group of 1,802 CVEs.

Social Chatter

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

asset-group.github.io / cves.html
Third Party Advisory
asset-group.github.io / disclosures/sweyntooth
Third Party Advisory
github.com / espressif/esp32-bt-lib
Third Party Advisory