CVE-2020-21598
libde265 v1.0.4 contains a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function, which can be exploited via a crafted a file.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
libde265 v1.0.4 contains a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function, which can be exploited via a crafted a file.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.81% probability · 79th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- struktur/libde265 · debian/debian linux
- Source
- cve@mitre.org
EPSS 1.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://cwe.mitre.org/data/definitions/122.htmlTechnical Description, Third Party Advisory
- https://github.com/strukturag/libde265/issues/237Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/01/msg00020.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5346Third Party Advisory
- https://cwe.mitre.org/data/definitions/122.htmlTechnical Description, Third Party Advisory
- https://github.com/strukturag/libde265/issues/237Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/01/msg00020.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5346Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.