How severe is CVE-2021-31927?

CVE-2021-31927 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-31927 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31927?

CVE-2021-31927 affects Annexcloud Loyalty Experience Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31927?

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

When was CVE-2021-31927 published?

CVE-2021-31927 was published on 2021-06-10 and last updated on 2026-06-17.

CVE-2021-31927

CVE-2021-31927 is a medium-severity vulnerability in Annexcloud Loyalty Experience Platform with a CVSS 3.x base score of 4.3. 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: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Annexcloud Loyalty Experience Platform
Published: 2021-06-10
Last modified: 2026-06-17

Description

An Insecure Direct Object Reference (IDOR) vulnerability in Annex Cloud Loyalty Experience Platform <2021.1.0.1 allows any authenticated attacker to modify any existing user, including users assigned to different environments and clients. It was fixed in v2021.1.0.2.

Frequently asked questions

What is CVE-2021-31927?: An Insecure Direct Object Reference (IDOR) vulnerability in Annex Cloud Loyalty Experience Platform <2021.1.0.1 allows any authenticated attacker to modify any existing user, including users assigned to different environments and clients. It was fixed in v2021.1.0.2.
How severe is CVE-2021-31927?: CVE-2021-31927 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-31927 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31927?: CVE-2021-31927 affects Annexcloud Loyalty Experience Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31927?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-31927 published?: CVE-2021-31927 was published on 2021-06-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:annexcloud:loyalty_experience_platform:*:*:*:*:*:*:*:*

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CVE-2021-31928 — High (CVSS 8.8): Annex Cloud Loyalty Experience Platform <2021.1.0.1 allows any authenticated attacker to escalate privileges to…
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