Is CVE-2022-3620 actively exploited?

CVE-2022-3620 has no public evidence of in-the-wild exploitation as of 2025-05-23.

What is the CVSS score for CVE-2022-3620?

CVE-2022-3620 has a CVSS score of 5.6 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

How do I patch CVE-2022-3620?

Patch guidance is available from exim security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2022-3620.

CVE-2022-3620 - remediation guidance & executive summary

Q: Which products are affected by CVE-2022-3620?

4 products: exim exim, fedoraproject fedora, fedoraproject fedora, fedoraproject fedora.

Description

A vulnerability was found in Exim and classified as problematic. This issue affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. The manipulation leads to use after free. The attack may be initiated remotely. The name of the patch is 12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211919.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector: network
Complexity: high
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: low
Integrity: low
Availability: low
Weaknesses: CWE-119 · Memory Buffer Errors CWE-416 · Use After Free

Metadata

Primary Vendor: EXIM
Published: 10/20/2022
Last Modified: 5/23/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2022-3620

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary