CVE-2020-36403

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.58% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 73.3% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-07-01 02:51Z5 YR AGO

Last updated

2024-08-04 17:23Z2 YR AGO

Reserved

2021-07-01

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

c06fbb843f13169b156acdf91d83c9eb9b56c7349d2dcd873d9498fdf2acca9f

• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24097x_refsource_MISC
• github.comhttps://github.com/samtools/htslib/commit/dcd4b7304941a8832fba2d0fc4c1e716e7a4e72cx_refsource_MISC
• github.comhttps://github.com/google/oss-fuzz-vulns/blob/main/vulns/htslib/OSV-2020-955.yamlx_refsource_MISC
• github.comhttps://github.com/samtools/htslib/pull/1447x_refsource_MISC