CVE-2021-33597: A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the SAVAPI component used in

Routine

LOW 3.5WATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2021-33597 is a low-severity flaw (CVSS 3.5) affecting client security, linux security, business suite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the SAVAPI component used in certain F-Secure products can crash while scanning fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service (DoS) of the Anti-Virus engine.

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.5 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Published	2021-08-05
Last modified	2026-06-17

Publisher (CNA): F-Secure · Vendor: f-secure

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-08-05 20:15 UTCPublished CVE record published
2026-06-17 03:54 UTCUpdated Record last modified

f-secure client security MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy client-security || rpm -q client-security || client-security --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

f-secure linux security MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy linux-security || rpm -q linux-security || linux-security --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

f-secure business suite MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy business-suite || rpm -q business-suite || business-suite --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

f-secure elements endpoint protection MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy elements-endpoint-protection || rpm -q elements-endpoint-protection || elements-endpoint-protection --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-33597?

client security: mitigate or apply the listed mitigation; linux security: mitigate or apply the listed mitigation; business suite: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-33597 being exploited?

CVE-2021-33597 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-33597 affect?

CVE-2021-33597 affects client security, linux security, business suite. Severity is low (CVSS 3.5). A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the SAVAPI component used in certain F-Secure products can crash while scanning fuzzed files. The exploit can be triggered remotely by an attacker. A successf

How urgent is CVE-2021-33597?

Priority 29/100. On your watchlist

Related CVEs

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CVE-2023-47264 HIGH 7.5 DOWNGRADE DOWNGRADE Certain WithSecure products have a buffer over-read whereby processing certain fuzz file types may cause a den
CVE-2023-47263 HIGH 7.5 DOWNGRADE DOWNGRADE Certain WithSecure products allow a Denial of Service (DoS) in the antivirus engine when scanning a fuzzed PE3
CVE-2023-47172 HIGH 7.8 DOWNGRADE DOWNGRADE Certain WithSecure products allow Local Privilege Escalation

References

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