CVE-2022-20770

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited 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

6.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 93.5% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/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

2022-05-04 17:05Z4 YR AGO

Last updated

2024-11-06 16:16Z1 YR AGO

Reserved

2021-11-02

Assigning CNA

cisco

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

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

Weaknesses

• CWE-399

Data version

5.1

Document digest

f07833c331474dfada115ef26dfdde7aa74049351c7cdebb41c94cba170f728e

• tools.cisco.com20220504 ClamAV CHM File Parsing Denial of Service Vulnerability Affecting Cisco Products: April 2022https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-dos-prVGcHLdvendor-advisory
• lists.fedoraproject.orgFEDORA-2022-b8691af27bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7RV6BLIATIJE74SQ6NG5ZC4JK5MMDQ2R/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-0ac71a8f3ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4NNBIJVG6Z4PDIKUZXTYXICYUAYAZ56/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-a910a41a17https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BX5ZXNHP4NFYQ5BFSKY3WT7NTBZUYG7L/vendor-advisory
• lists.debian.org[debian-lts-announce] 20220603 [SECURITY] [DLA 3042-1] clamav security updatehttps://lists.debian.org/debian-lts-announce/2022/06/msg00004.htmlmailing-list
• security.gentoo.orgGLSA-202310-01https://security.gentoo.org/glsa/202310-01vendor-advisory