How severe is CVE-2021-40604?

CVE-2021-40604 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-40604 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40604?

CVE-2021-40604 affects Invisioncommunity Ips Community Suite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40604?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-40604 published?

CVE-2021-40604 was published on 2022-06-13 and last updated on 2026-06-17.

CVE-2021-40604

CVE-2021-40604 is a critical-severity vulnerability in Invisioncommunity Ips Community Suite with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Invisioncommunity Ips Community Suite
Published: 2022-06-13
Last modified: 2026-06-17

Description

A Server-Side Request Forgery (SSRF) vulnerability in IPS Community Suite before 4.6.2 allows remote authenticated users to request arbitrary URLs or trigger deserialization via phar protocol when generating class names dynamically. In some cases an exploitation is possible by an unauthenticated user.

Frequently asked questions

What is CVE-2021-40604?: A Server-Side Request Forgery (SSRF) vulnerability in IPS Community Suite before 4.6.2 allows remote authenticated users to request arbitrary URLs or trigger deserialization via phar protocol when generating class names dynamically. In some cases an exploitation is possible by an unauthenticated user.
How severe is CVE-2021-40604?: CVE-2021-40604 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-40604 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40604?: CVE-2021-40604 affects Invisioncommunity Ips Community Suite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40604?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-40604 published?: CVE-2021-40604 was published on 2022-06-13 and last updated on 2026-06-17.

References

https://invisioncommunity.com/release-notes/462-r99/

Affected products (1)

cpe:2.3:a:invisioncommunity:ips_community_suite:*:*:*:*:*:*:*:*

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