CVE-2020-29509

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

2.09% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 81.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. 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

2020-12-14 20:02Z5 YR AGO

Last updated

2024-09-17 03:43Z2 YR AGO

Reserved

2020-12-03

Assigning CNA

Mattermost

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-115Misinterpretation of InputBase

Data version

5.1

Document digest

2edba38e0d48545984b90dcf6db221537574a91a735050695848485c20549172

• github.comhttps://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.mdx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210129-0006/x_refsource_CONFIRM