How severe is CVE-2021-43439?

CVE-2021-43439 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-2021-43439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43439?

CVE-2021-43439 affects Iresturant Project Iresturant. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43439?

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-2021-43439 published?

CVE-2021-43439 was published on 2021-12-20 and last updated on 2026-06-17.

CVE-2021-43439

CVE-2021-43439 is a critical-severity vulnerability in Iresturant Project Iresturant 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-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Iresturant Project Iresturant
Published: 2021-12-20
Last modified: 2026-06-17

Description

RCE in Add Review Function in iResturant 1.0 Allows remote attacker to execute commands remotely

Frequently asked questions

What is CVE-2021-43439?: RCE in Add Review Function in iResturant 1.0 Allows remote attacker to execute commands remotely
How severe is CVE-2021-43439?: CVE-2021-43439 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-2021-43439 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43439?: CVE-2021-43439 affects Iresturant Project Iresturant. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43439?: 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-2021-43439 published?: CVE-2021-43439 was published on 2021-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:iresturant_project:iresturant:1.0:*:*:*:*:*:*:*

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