How severe is CVE-2021-45834?

CVE-2021-45834 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2021-45834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45834?

CVE-2021-45834 affects Opendocman. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45834?

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-2021-45834 published?

CVE-2021-45834 was published on 2022-03-18 and last updated on 2026-07-05.

CVE-2021-45834

CVE-2021-45834 is a critical-severity vulnerability in Opendocman with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Opendocman
Published: 2022-03-18
Last modified: 2026-07-05

Description

An attacker can upload or transfer files of dangerous types to the OpenDocMan 1.4.4 portal via add.php using MIME-bypass, which may be automatically processed within the product's environment or lead to arbitrary code execution.

Frequently asked questions

What is CVE-2021-45834?: An attacker can upload or transfer files of dangerous types to the OpenDocMan 1.4.4 portal via add.php using MIME-bypass, which may be automatically processed within the product's environment or lead to arbitrary code execution.
How severe is CVE-2021-45834?: CVE-2021-45834 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2021-45834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45834?: CVE-2021-45834 affects Opendocman. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45834?: 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-2021-45834 published?: CVE-2021-45834 was published on 2022-03-18 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:opendocman:opendocman:1.4.4:-:*:*:*:*:*:*

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