THREATPORT/VULNERABILITY/CVE-2022-3559
MEDIUM SEVERITY

CVE-2022-3559

Exim vulnerability

CVSS
4.6
EPSS
3.7%
EPSS pct
88th
Exploited
No known
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.
Affected vendor
Exim
Affected product
Exim
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
  • CWE-416 — Use After Free
Published
2022-10-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable from an adjacent network, high attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity, low impact to availability.

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2022-3559

  • Confirm whether Exim Exim is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-3559.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-3559

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