How severe is CVE-2021-34280?

CVE-2021-34280 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-34280 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34280?

CVE-2021-34280 affects Polarisoffice Polaris Office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34280?

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-2021-34280 published?

CVE-2021-34280 was published on 2021-06-08 and last updated on 2026-06-17.

CVE-2021-34280

CVE-2021-34280 is a high-severity vulnerability in Polarisoffice Polaris Office with a CVSS 3.x base score of 7.8. 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-824.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-824
Affected product: Polarisoffice Polaris Office
Published: 2021-06-08
Last modified: 2026-06-17

Description

Polaris Office v9.103.83.44230 is affected by a Uninitialized Pointer Vulnerability in PolarisOffice.exe and EngineDLL.dll that may cause a Remote Code Execution. To exploit the vulnerability, someone must open a crafted PDF file.

Frequently asked questions

What is CVE-2021-34280?: Polaris Office v9.103.83.44230 is affected by a Uninitialized Pointer Vulnerability in PolarisOffice.exe and EngineDLL.dll that may cause a Remote Code Execution. To exploit the vulnerability, someone must open a crafted PDF file.
How severe is CVE-2021-34280?: CVE-2021-34280 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-34280 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34280?: CVE-2021-34280 affects Polarisoffice Polaris Office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34280?: 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-2021-34280 published?: CVE-2021-34280 was published on 2021-06-08 and last updated on 2026-06-17.

References

https://github.com/dlehgus1023/CVE/tree/master/CVE-2021-34280

Affected products (1)

cpe:2.3:a:polarisoffice:polaris_office:9.103.83.44230:*:*:*:*:*:*:*

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