What is CVE-2020-21600?

CVE-2020-21600 is a medium-severity vulnerability in Struktur Libde265, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-09-16.

How severe is CVE-2020-21600?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2020-21600 known to be exploited?

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

Buffer overflow in Struktur Libde265

CVE-2020-21600

libde265 v1.0.4 contains a heap buffer overflow in the put_weighted_pred_avg_16_fallback function, which can be exploited via a crafted a file.

Vulnerability class: Buffer Overflow

EPSS: 0.014 (70.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Struktur Libde265 — versions 1.0.4
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
cve@mitre.org (Technical Description)
cve@mitre.org (vendor-advisory)

Frequently asked questions

What is CVE-2020-21600?: CVE-2020-21600 is a medium-severity vulnerability in Struktur Libde265, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-09-16.
How severe is CVE-2020-21600?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2020-21600 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.