How severe is CVE-2021-21487?

CVE-2021-21487 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21487 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21487?

CVE-2021-21487 affects Sap Payment Engine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21487?

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-2021-21487 published?

CVE-2021-21487 was published on 2021-03-09 and last updated on 2026-06-17.

CVE-2021-21487

CVE-2021-21487 is a high-severity vulnerability in Sap Payment Engine with a CVSS 3.x base score of 8.8. 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-862.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Sap Payment Engine
Published: 2021-03-09
Last modified: 2026-06-17

Description

SAP Payment Engine version 500, does not perform necessary authorization checks for an authenticated user, resulting in escalation of privileges.

Frequently asked questions

What is CVE-2021-21487?: SAP Payment Engine version 500, does not perform necessary authorization checks for an authenticated user, resulting in escalation of privileges.
How severe is CVE-2021-21487?: CVE-2021-21487 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21487 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21487?: CVE-2021-21487 affects Sap Payment Engine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21487?: 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-2021-21487 published?: CVE-2021-21487 was published on 2021-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sap:payment_engine:500:*:*:*:*:*:*:*

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →