CVE-2021-21482

Administrative credential disclosure via unlimited password guesses

Published Apr 13, 2021 · Updated Aug 3, 2024

Improper account lockout in SAP NetWeaver Master Data Management allows remote attackers to recover administrator passwords. The MDM Server leaves administrative accounts unlocked after repeated failed connection attempts, allowing password guesses to continue without an account-locking limit. Access to the MDM Server subnet and insufficient administrative-account hardening are required; successful guessing exposes sensitive data and grants MDM administrative privileges.

CVSS severity8.3
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper account lockout in SAP NetWeaver Master Data Management allows remote attackers to recover administrator passwords. The MDM Server leaves administrative accounts unlocked after repeated failed connection attempts, allowing password guesses to continue without an account-locking limit. Access to the MDM Server subnet and insufficient administrative-account hardening are required; successful guessing exposes sensitive data and grants MDM administrative privileges.

The record

CVE
CVE-2021-21482
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP NetWeaver Master Data Management Server
Classifications
T1110
Attack vector
adjacent
Privileges
unauthenticated

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=< 710
  2. Affected versionversion=< 710.750

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

SAP SE · SAP NetWeaver Master Data Management Serverversion=< 710; version=< 710.750

Published CVSS scores

4.8NIST NVDAV:A/AC:L/Au:N/C:P/I:P/A:N
8.3SAP SECVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
8.3NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

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.

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No observations available

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

Weakness, pattern, technique

T1110Brute Force

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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