CVE-2021-21487

Authenticated privilege escalation through missing authorization checks

Published Mar 9, 2021 · Updated Aug 3, 2024

Missing authorization checks in SAP Payment Engine 500 allow remote authenticated users to escalate privileges through unspecified functions. SAP's published record does not identify the affected transaction, function, authorization object, or exact operation that omits the required check. Low-privileged authenticated access is required, and SAP's CVSS assessment bounds the demonstrated consequence to unauthorized high-integrity changes without reported data disclosure or service interruption.

CVSS severity8.8
High
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization checks in SAP Payment Engine 500 allow remote authenticated users to escalate privileges through unspecified functions. SAP's published record does not identify the affected transaction, function, authorization object, or exact operation that omits the required check. Low-privileged authenticated access is required, and SAP's CVSS assessment bounds the demonstrated consequence to unauthorized high-integrity changes without reported data disclosure or service interruption.

The record

CVE
CVE-2021-21487
Published
Mar 9, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP Payment Engine
Classifications
CWE-862, T1068
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 500

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

SAP SE · SAP Payment Engineversion=< 500

Published CVSS scores

6.8SAP SECVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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