How severe is CVE-2021-43464?

CVE-2021-43464 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43464?

CVE-2021-43464 affects Intelliants Subrion Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43464?

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

When was CVE-2021-43464 published?

CVE-2021-43464 was published on 2022-04-04 and last updated on 2026-06-17.

CVE-2021-43464

CVE-2021-43464 is a high-severity vulnerability in Intelliants Subrion Cms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Intelliants Subrion Cms
Published: 2022-04-04
Last modified: 2026-06-17

Description

A Remiote Code Execution (RCE) vulnerability exiss in Subrion CMS 4.2.1 via modified code in a background field; when the information is modified, the data in it will be executed through eval().

Frequently asked questions

What is CVE-2021-43464?: A Remiote Code Execution (RCE) vulnerability exiss in Subrion CMS 4.2.1 via modified code in a background field; when the information is modified, the data in it will be executed through eval().
How severe is CVE-2021-43464?: CVE-2021-43464 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43464?: CVE-2021-43464 affects Intelliants Subrion Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-43464 published?: CVE-2021-43464 was published on 2022-04-04 and last updated on 2026-06-17.

References

https://github.com/intelliants/subrion/issues/888

Affected products (1)

cpe:2.3:a:intelliants:subrion_cms:4.2.1:*:*:*:*:*:*:*

More vulnerabilities in Intelliants Subrion Cms

CVE-2017-11445 — Critical (CVSS 9.8): Subrion CMS before 4.1.6 has a SQL injection vulnerability in /front/actions.php via the $_POST array.
CVE-2017-11444 — Critical (CVSS 9.8): Subrion CMS before 4.1.5.10 has a SQL injection vulnerability in /front/search.php via the $_GET array.
CVE-2017-6013 — Critical (CVSS 9.8): Subrion CMS 4.0.5.10 has SQL injection in admin/database/ via the query parameter.
CVE-2020-18326 — High (CVSS 8.8): Cross Site Request Forgery (CSRF) vulnerability exists in Intelliants Subrion CMS v4.2.1 via the Members administrator…
CVE-2019-7357 — High (CVSS 8.8): Subrion CMS 4.2.1 has CSRF in panel/modules/plugins/. The attacker can remotely activate/deactivate the plugins.
CVE-2017-18366 — High (CVSS 8.8): Subrion CMS 4.1.5 has CSRF in blog/delete/.

All CVEs affecting Intelliants Subrion Cms →