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CVE-2022-2993

29
FAUCET Score

CVE-2022-2993 is a critical vulnerability affecting Zephyr Project's Zephyr operating system, stemming from an error in the smp_check_keys function that incorrectly rejected valid keys. With a CVSS score of 9.8, this flaw presents a severe risk, allowing unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability with low attack complexity. While no public exploits, Metasploit modules, or KEV entries exist, and community discussion is minimal, its high FAUCET Risk Score of 79/100 indicates a significant underlying threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.0CPE matchmatch criteria
cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 23rd 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

Vendor Patches (1)

github_advisoryworkaround availablevia nvd_reference
View patch

References

github.com / zephyrproject-rtos/zephyr/security/advisories/GHSA-3286-jgjx-8cvr
MitigationThird Party Advisory