CVE-2022-28886Network attack vector

Scanning-engine crash via PE-unpacking infinite loop

Published Sep 23, 2022 · Updated May 22, 2025

Denial of service in F-Secure and WithSecure endpoint protection products allows remote attackers to crash the scanning engine. The aerdl.so and aerdl.dll PE-unpacking modules can enter an infinite loop instead of terminating while processing a PE file. The remote trigger requires the scanning engine to process the file, and a successful trigger interrupts malware scanning by hanging or crashing the engine.

CVSS severity4.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in F-Secure and WithSecure endpoint protection products allows remote attackers to crash the scanning engine. The aerdl.so and aerdl.dll PE-unpacking modules can enter an infinite loop instead of terminating while processing a PE file. The remote trigger requires the scanning engine to process the file, and a successful trigger interrupts malware scanning by hanging or crashing the engine.

The record

CVE
CVE-2022-28886
Published
Sep 23, 2022
Updated
May 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-835, T1499
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 23, 2022CVE publishedPublication date reported by the CVE source.
  2. May 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3F-SecureCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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