Possible to retrieve uncrypted firmware image

published 2023-01-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-15675

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

There is no check to see if slot 0 is being uploaded from the device to the host. When using encrypted images this means the unencrypted firmware can be retrieved easily.

Patch / fix

fixed in 1 links 1

zephyrproject zephyr 3.0.0

github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-wrj2-9v… advisory

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-04-09)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-wrj2-9vj9-rrcp referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	4.6	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

zephyrproject-rtos zephyr

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-319 Cleartext Transmission of Sensitive Information

References

github.com /zephyrproject-rtos/zephyr/security/advisories/GHSA-wrj2-9vj9-rrcp
exploit, patch, third-party-advisory

Sources

CVE List CVE-2022-0553
NVD CVE-2022-0553

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary