CVE-2020-35634

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 82.4% 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

2021-08-30 00:00Z5 YR AGO

Last updated

2025-04-23 19:31Z1 YR AGO

Reserved

2020-12-22

Assigning CNA

talos

Record state

PUBLISHED

Severity

Critical (CVSS 10.0)

CNA CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-129Improper Validation of Array IndexVariant

Data version

5.1

Document digest

c55bf667cfede8fe6a984c834f79d19b86176acb52867747fbd240516798dab8

• talosintelligence.comhttps://talosintelligence.com/vulnerability_reports/TALOS-2020-1225
• lists.debian.org[debian-lts-announce] 20221206 [SECURITY] [DLA 3226-1] cgal security updatehttps://lists.debian.org/debian-lts-announce/2022/12/msg00011.htmlmailing-list
• security.gentoo.orgGLSA-202305-34https://security.gentoo.org/glsa/202305-34vendor-advisory