What is CVE-2021-31240?

CVE-2021-31240 is a high-severity vulnerability in Libming, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.8/10. Published 2023-05-09.

How severe is CVE-2021-31240?

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

Vulnerability in Libming

CVE-2021-31240

An issue found in libming v.0.4.8 allows a local attacker to execute arbitrary code via the parseSWF_IMPORTASSETS function in the parser.c file.

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:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (18.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.6% 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

Libming — versions 0.4.8

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

github.com/libming/libming/issues/218 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-31240?: CVE-2021-31240 is a high-severity vulnerability in Libming, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.8/10. Published 2023-05-09.
How severe is CVE-2021-31240?: High severity. CVSS v3 base score is 7.8 out of 10.