CVE-2021-43271Network attack vector

Credential disclosure via failed-login logging

Published Jun 3, 2022 · Updated Aug 4, 2024

CWE-532 in Riverbed AppResponse 11.8.0 through 11.11.5a allows remote authenticated users to disclose credentials via failed WebUI logins. The WebUI records an incorrectly entered username and password in an error message, and diagnostic system dumps include the WebUI log. Exploitation requires local, RADIUS, or TACACS authentication and Full Control of System Configuration to generate a dump; SAML authentication does not trigger the logging behavior.

CVSS severity7.1
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CWE-532 in Riverbed AppResponse 11.8.0 through 11.11.5a allows remote authenticated users to disclose credentials via failed WebUI logins. The WebUI records an incorrectly entered username and password in an error message, and diagnostic system dumps include the WebUI log. Exploitation requires local, RADIUS, or TACACS authentication and Full Control of System Configuration to generate a dump; SAML authentication does not trigger the logging behavior.

The record

CVE
CVE-2021-43271
Published
Jun 3, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1NVDAV:N/AC:H/Au:S/C:C/I:C/A:C
6.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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