CVE-2020-9366

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

2.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 84.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI: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

2020-02-24 16:20Z6 YR AGO

Last updated

2024-08-04 10:26Z2 YR AGO

Reserved

2020-02-24

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
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

3c9099fa2f317d71be5a82bd08f237b4ab1fa89314b22b57026921637128d596

• www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/02/06/3x_refsource_MISC
• lists.gnu.orghttps://lists.gnu.org/archive/html/screen-devel/2020-02/msg00007.htmlx_refsource_MISC
• www.openwall.com[oss-security] 20200225 Re: Re: GNU screen "out of bounds access when setting w_xtermosc after OSC 49"http://www.openwall.com/lists/oss-security/2020/02/25/1mailing-listx_refsource_MLIST
• security.gentoo.orgGLSA-202003-62https://security.gentoo.org/glsa/202003-62vendor-advisoryx_refsource_GENTOO