CWE-203
751 CVEs • Abstraction: Base
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
CVEs (751)
CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS |
|---|
A privacy issue was addressed by moving sensitive data to a more secure location. This issue is fixed in iOS 17.5 and iPadOS 17.5. A malicious application may be able to determine a user's current location. |
IBM Aspera Orchestrator 4.0.1 could allow a remote attacker to enumerate usernames due to observable response discrepancies. IBM X-Force ID: 248545. |
IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181. |
In Logpoint before 7.4.0, an attacker can enumerate a valid list of usernames by using publicly exposed URLs of shared widgets. |
A timing-based side-channel flaw exists in the perl-Crypt-OpenSSL-RSA package, which could be sufficient to recover plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attack...Show more |
1Panel is an open source Linux server operation and maintenance management panel. The password verification in the source code uses the != symbol instead hmac.Equal. This may lead to a timing attack vulnerability. This v...Show more |
1Microsoft 4Windows Server 2016 Windows Server 2019Windows Server 2022+1 moreJun 17, 2026 Apr 9, 2024 N/A· v4 6.6 MEDIUM· v3 N/A· v2 Windows DNS Server Remote Code Execution Vulnerability |
A timing-based side-channel flaw exists in the rust-openssl package, which could be sufficient to recover a plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would...Show more |
This issue occurs during password recovery, where a difference in messages could allow an attacker to determine if the user is valid or not, enabling a brute force attack with valid users.This issue affects CDeX applicat...Show more |
Umbraco is an ASP.NET content management system. Umbraco 10 prior to 10.8.4 with access to the native login screen is vulnerable to a possible user enumeration attack. This issue was fixed in version 10.8.5. As a workaro...Show more |
2Debian Mozilla3Debian Linux FirefoxThunderbirdJun 17, 2026 Mar 19, 2024 N/A· v4 6.5 MEDIUM· v3 N/A· v2 NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115...Show more |
User enumeration can occur in the Authentication REST API in Delinea PAM Secret Server 11.4. This allows a remote attacker to determine whether a user is valid because of a difference in responses from the /oauth2/token...Show more |
A potential security vulnerability has been reported in the system BIOS of certain HP PC products, which might allow memory tampering. HP is releasing mitigation for the potential vulnerability. |
CasaOS-UserService provides user management functionalities to CasaOS. Starting in version 0.4.4.3 and prior to version 0.4.7, the Casa OS Login page disclosed the username enumeration vulnerability in the login page. An...Show more |
IBM CICS TX Advanced 10.1 could disclose sensitive information to a remote attacker due to observable discrepancy in HTTP responses. IBM X-Force ID: 260814. |
Theoretically, it would be possible for an attacker to brute-force the password for an instance in single-user password protection mode via a timing attack given the linear nature of the `!==` used for comparison. The r...Show more |
An issue was discovered in LIVEBOX Collaboration vDesk through v031. An Observable Response Discrepancy can occur under the /api/v1/vdeskintegration/user/isenableuser endpoint, the /api/v1/sharedsearch?search={NAME]+{SUR...Show more |
1Liferay 2Digital Experience Platform Liferay PortalJun 17, 2026 Feb 20, 2024 N/A· v4 5.3 MEDIUM· v3 N/A· v2 User enumeration vulnerability in Liferay Portal 7.2.0 through 7.4.3.26, and older unsupported versions, and Liferay DXP 7.4 before update 27, 7.3 before update 8, 7.2 before fix pack 20, and older unsupported versions a...Show more |
IBM Common Licensing 9.0 could allow a local user to enumerate usernames due to an observable response discrepancy. IBM X-Force ID: 273337. |
1Hp 27Elite Mini 600 G9 Firmware Elite Mini 800 G9 FirmwareElite Sff 600 G9 Firmware+24 moreJun 17, 2026 Feb 14, 2024 N/A· v4 6.4 MEDIUM· v3 N/A· v2 Potential vulnerabilities have been identified in certain HP Desktop PC products using the HP TamperLock feature, which might allow intrusion detection bypass via a physical attack. HP is releasing firmware and guidance...Show more |