How severe is CVE-2021-22855?

CVE-2021-22855 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-2021-22855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22855?

CVE-2021-22855 affects Hr Portal Project Hr Portal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22855?

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-2021-22855 published?

CVE-2021-22855 was published on 2021-02-17 and last updated on 2026-06-17.

CVE-2021-22855

CVE-2021-22855 is a critical-severity vulnerability in Hr Portal Project Hr Portal 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Hr Portal Project Hr Portal
Published: 2021-02-17
Last modified: 2026-06-17

Description

The specific function of HR Portal of Soar Cloud System accepts any type of object to be deserialized. Attackers can send malicious serialized objects to execute arbitrary commands.

Frequently asked questions

What is CVE-2021-22855?: The specific function of HR Portal of Soar Cloud System accepts any type of object to be deserialized. Attackers can send malicious serialized objects to execute arbitrary commands.
How severe is CVE-2021-22855?: CVE-2021-22855 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-2021-22855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22855?: CVE-2021-22855 affects Hr Portal Project Hr Portal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22855?: 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-2021-22855 published?: CVE-2021-22855 was published on 2021-02-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hr_portal_project:hr_portal:7.3.2020.1013:*:*:*:*:*:*:*

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