Medium severity · published Oct 6, 2021
CVE-2021-33602
A vulnerability affecting the F-Secure Antivirus engine was discovered when the engine tries to unpack a zip archive (LZW decompression method), and this can crash the scanning…
5.3
CVSS
0.6%
EPSS
No
On KEV
Description
A vulnerability affecting the F-Secure Antivirus engine was discovered when the engine tries to unpack a zip archive (LZW decompression method), and this can crash the scanning engine. The vulnerability can be exploited remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AT
Atlant · F-secure
All versions, or not specified · source: NVD
CP
Cloud Protection · F-secure
All versions, or not specified · source: NVD
IG
Internet Gatekeeper · F-secure
All versions, or not specified · source: NVD
LS
Linux Security · F-secure
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33602
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33602
Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories
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