What is CVE-2023-31981?

CVE-2023-31981 is a high-severity vulnerability in Irontec Sngrep, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-05-09.

How severe is CVE-2023-31981?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Irontec Sngrep

CVE-2023-31981

Sngrep v1.6.0 was discovered to contain a stack buffer overflow via the function packet_set_payload at /src/packet.c.

Vulnerability class: Buffer Overflow

Published 2023-05-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (21.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Irontec Sngrep — versions 1.6.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/irontec/sngrep/issues/430 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-31981?: CVE-2023-31981 is a high-severity vulnerability in Irontec Sngrep, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-05-09.
How severe is CVE-2023-31981?: High severity. CVSS v3 base score is 7.8 out of 10.