Is CVE-2022-3559 actively exploited?

CVE-2022-3559 has no public evidence of in-the-wild exploitation as of 2025-11-03.

What is the CVSS score for CVE-2022-3559?

CVE-2022-3559 has a CVSS score of 4.6 (MEDIUM severity). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

How do I patch CVE-2022-3559?

Patch guidance is available from exim security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2022-3559.

CVE-2022-3559 - remediation guidance & executive summary

Q: Which products are affected by CVE-2022-3559?

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

Description

A vulnerability was found in Exim and classified as problematic. This issue affects some unknown processing of the component Regex Handler. The manipulation leads to use after free. The name of the patch is 4e9ed49f8f12eb331b29bd5b6dc3693c520fddc2. It is recommended to apply a patch to fix this issue. The identifier VDB-211073 was assigned to this vulnerability.

CVSS Metrics

Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack Vector: adjacent network
Complexity: high
Privileges: low
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: 10/17/2022
Last Modified: 11/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2022-3559

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary