CVE-2020-27347

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

0.69% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2020-11-06 02:20Z5 YR AGO

Last updated

2024-09-17 00:20Z2 YR AGO

Reserved

2020-10-20

Assigning CNA

canonical

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-121Stack-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

08d552820090dbbde8d6e3457caad2e48dcb8e0d5355e9f3035219236732560c

• github.comhttps://github.com/tmux/tmux/commit/a868bacb46e3c900530bed47a1c6f85b0fbe701cx_refsource_MISC
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/11/05/3x_refsource_MISC
• security.gentoo.orgGLSA-202011-10https://security.gentoo.org/glsa/202011-10vendor-advisoryx_refsource_GENTOO
• raw.githubusercontent.comhttps://raw.githubusercontent.com/tmux/tmux/3.1c/CHANGESx_refsource_CONFIRM