What is CVE-2022-1841?

CVE-2022-1841 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 7.2/10. Published 2022-08-31.

How severe is CVE-2022-1841?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2022-1841 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Zephyrproject Zephyr

CVE-2022-1841

In subsys/net/ip/tcp.c , function tcp_flags , when the incoming parameter flags is ECN or CWR , the buf will out-of-bounds write a byte zero.

Vulnerability class: Buffer Overflow

Published 2022-08-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (45.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Zephyrproject Zephyr
Zephyrproject-Rtos Zephyr — versions unspecified

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

GANGE666/Vulnerabilities

References

github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-5c3j-p8cr-2pgh (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-1841?: CVE-2022-1841 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 7.2/10. Published 2022-08-31.
How severe is CVE-2022-1841?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2022-1841 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.