How severe is CVE-2021-36543?

CVE-2021-36543 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-36543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36543?

CVE-2021-36543 primarily affects Seeddms. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-36543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-36543 published?

CVE-2021-36543 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-36543

CVE-2021-36543 is a medium-severity vulnerability in Seeddms with a CVSS 3.x base score of 4.3. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Seeddms
Published: 2021-08-03
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) vulnerability in the /op/op.UnlockDocument.php in SeedDMS v5.1.x <5.1.23 and v6.0.x <6.0.16 allows a remote attacker to unlock any document without victim's knowledge, by enticing an authenticated user to visit an attacker's web page.

Frequently asked questions

What is CVE-2021-36543?: Cross-Site Request Forgery (CSRF) vulnerability in the /op/op.UnlockDocument.php in SeedDMS v5.1.x <5.1.23 and v6.0.x <6.0.16 allows a remote attacker to unlock any document without victim's knowledge, by enticing an authenticated user to visit an attacker's web page.
How severe is CVE-2021-36543?: CVE-2021-36543 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-36543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36543?: CVE-2021-36543 primarily affects Seeddms. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-36543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36543 published?: CVE-2021-36543 was published on 2021-08-03 and last updated on 2026-06-17.

References

https://cyberdivision.medium.com/cve-2021-36543-9622f50c6dc

Affected products (2)

cpe:2.3:a:seeddms:seeddms:*:*:*:*:*:*:*:*
cpe:2.3:a:seeddms:seeddms:6.0.6:beta:*:*:*:*:*:*

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