CVE-2020-9342 json
The F-Secure AV parsing engine before 2020-02-05 allows virus-detection bypass via crafted Compression Method data in a GZIP archive.
published 2020-02-22 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30163
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
The F-Secure AV parsing engine before 2020-02-05 allows virus-detection bypass via crafted Compression Method data in a GZIP archive. This affects versions before 17.0.605.474 (on Linux) of Cloud Protection For Salesforce, Email and Server Security, and Internet GateKeeper.
Patch / fix
- f-secure cloud_protection_for_salesforce 17.0.605.474
- f-secure email_and_server_security 17.0.605.474
- f-secure internet_gatekeeper 17.0.605.474
Exploit prediction
1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-436 Interpretation Conflict
References
-
blog.zoller.lu
/p/tzo-16-2020-f-secure-generic-malformed.html
third-party-advisory
-
seclists.org
/bugtraq/2020/Feb/33
mailing-list, third-party-advisory
-
packetstormsecurity.com
/files/156506/F-SECURE-Generic-Malformed-Container-Bypass.html
third-party-advisory, vdb-entry
-
seclists.org
/fulldisclosure/2020/Feb/33
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-9342
- NVD CVE-2020-9342
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.