CVE-2021-27600Network attack vector

Stored script execution via insufficient parameter encoding

Published Apr 13, 2021 · Updated Aug 3, 2024

Stored XSS in SAP Manufacturing Execution 15.1 through 15.4 allows remote authenticated users to execute scripts through System Rules. The System Rules tab stores HTTP parameter values without sufficiently encoding them before later browser rendering. An authorized user must submit the crafted parameter; resulting script execution can read, modify, and transmit application information but cannot interrupt server availability.

CVSS severity6.4
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in SAP Manufacturing Execution 15.1 through 15.4 allows remote authenticated users to execute scripts through System Rules. The System Rules tab stores HTTP parameter values without sufficiently encoding them before later browser rendering. An authorized user must submit the crafted parameter; resulting script execution can read, modify, and transmit application information but cannot interrupt server availability.

The record

CVE
CVE-2021-27600
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP Manufacturing Execution
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 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=< 15.1
  2. Affected versionversion=< 15.2
  3. Affected versionversion=< 15.3
  4. Affected versionversion=< 15.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SAP SE · SAP Manufacturing Executionversion=< 15.1; version=< 15.2; version=< 15.3; version=< 15.4

Published CVSS scores

6.4SAP SECVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST National Vulnerability DatabaseAV:N/AC:M/Au:S/C:N/I:P/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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