VDB-214371 · CVE-2022-38166 · EUVD-2022-40763

F-Secure Endpoint Protection up to 2022-11-22 on Windows/macOS Unpacker aerdl.dll denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in F-Secure Endpoint Protection up to 2022-11-22 on Windows/macOS and classified as problematic. This vulnerability affects unknown code in the library aerdl.dll of the component Unpacker Handler. Performing a manipulation results in denial of service. This vulnerability is identified as CVE-2022-38166. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in F-Secure Endpoint Protection up to 2022-11-22 on Windows/macOS. This affects an unknown part in the library aerdl.dll of the component Unpacker Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

In F?Secure Endpoint Protection for Windows and macOS before channel with Capricorn database 2022-11-22_07, the aerdl.dll unpacker handler crashes. This can lead to a scanning engine crash, triggerable remotely by an attacker for denial of service.

The weakness was released 11/25/2022. It is possible to read the advisory at f-secure.com. This vulnerability is uniquely identified as CVE-2022-38166 since 08/11/2022. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-40763). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

F-Secure

Name

Endpoint Protection

Version

2022-11-22

License

commercial

Website

Vendor: https://www.f-secure.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/11/2022 🔍
11/25/2022 +106 days 🔍
11/25/2022 +0 days 🔍
06/22/2026 +1305 days 🔍

Sourcesinfo

Vendor: f-secure.com

Advisory: f-secure.com
Status: Confirmed

CVE: CVE-2022-38166 (🔍)
GCVE (CVE): GCVE-0-2022-38166
GCVE (VulDB): GCVE-100-214371
EUVD: 🔍

Entryinfo

Created: 11/25/2022 19:01
Updated: 06/22/2026 03:00
Changes: 11/25/2022 19:01 (41), 12/23/2022 10:30 (11), 06/22/2026 03:00 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.