How severe is CVE-2021-36906?

CVE-2021-36906 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-36906 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36906?

CVE-2021-36906 affects Expresstech Quiz And Survey Master. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36906?

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

When was CVE-2021-36906 published?

CVE-2021-36906 was published on 2022-11-03 and last updated on 2026-06-17.

CVE-2021-36906

CVE-2021-36906 is a low-severity vulnerability in Expresstech Quiz And Survey Master with a CVSS 3.x base score of 2.7. 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-639.

Key facts

Severity: Low (CVSS 3.x base score 2.7)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Expresstech Quiz And Survey Master
Published: 2022-11-03
Last modified: 2026-06-17

Description

Multiple Insecure Direct Object References (IDOR) vulnerabilities in ExpressTech Quiz And Survey Master plugin <= 7.3.6 on WordPress.

Frequently asked questions

What is CVE-2021-36906?: Multiple Insecure Direct Object References (IDOR) vulnerabilities in ExpressTech Quiz And Survey Master plugin <= 7.3.6 on WordPress.
How severe is CVE-2021-36906?: CVE-2021-36906 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-36906 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36906?: CVE-2021-36906 affects Expresstech Quiz And Survey Master. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36906?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36906 published?: CVE-2021-36906 was published on 2022-11-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:expresstech:quiz_and_survey_master:*:*:*:*:*:wordpress:*:*

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