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CWE-203

826 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.

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CVEs (826)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
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Jul 5, 2026
Feb 27, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior to v3.9.7, Vigor 2862/2926 prior to v3.9.9.4, Vigor 2133/2762/2832 prior to v3.9.8, Vigor 2135/2765/2766 prior to...Show more
Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior to v3.9.7, Vigor 2862/2926 prior to v3.9.9.4, Vigor 2133/2762/2832 prior to v3.9.8, Vigor 2135/2765/2766 prior to v4.4.5.1, Vigor 2865/2866/2927 prior to v4.4.5.3, Vigor 2962/3910 prior to v4.3.2.7, Vigor 3912 prior to v4.3.5.2, and Vigor 2925 up to v3.9.6 were discovered to utilize insecure versions of the functions strcmp and memcmp, allowing attackers to possibly obtain sensitive information via timing attacks.Show less
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Jun 17, 2026
Feb 11, 2025
6.9 MEDIUM· v4
5.3 MEDIUM· v3
N/A· v2
The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between...Show more
The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames.Show less
1Ibm
1Sterling B2b Integrator
Jun 17, 2026
Jan 31, 2025
N/A· v4
4.3 MEDIUM· v3
N/A· v2
IBM Sterling B2B Integrator 6.0.0.0 through 6.1.2.5 and 6.2.0.0 through 6.2.0.3 Standard Edition EBICS server could allow an authenticated user to obtain sensitive filename information due to an observable discrepancy.
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Jun 17, 2026
Jan 30, 2025
5.3 MEDIUM· v4
N/A· v3
N/A· v2
A specific authentication strategy allows to learn ids of PAM users associated with certain authentication types.
1Ibm
1Aspera Faspex
Jun 17, 2026
Jan 29, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
IBM Aspera Faspex 5.0.0 through 5.0.10 could disclose sensitive username information due to an observable response discrepancy.
1Arm
9C1 Premium Firmware
C1 Pro FirmwareC1 Ultra Firmware+6 more
Jun 17, 2026
Jan 28, 2025
N/A· v4
5.1 MEDIUM· v3
N/A· v2
An unprivileged context can trigger a data memory-dependent prefetch engine to fetch the contents of a privileged location and consume those contents as an address that is also dereferenced.
1Ibm
1Sterling File Gateway
Jun 17, 2026
Jan 27, 2025
N/A· v4
4.3 MEDIUM· v3
N/A· v2
IBM Sterling File Gateway 6.0.0.0 through 6.1.2.5 and 6.2.0.0 through 6.2.0.1 could allow an authenticated user to enumerate usernames due to an observable discrepancy in request responses.
1Ibm
1Control Center
Jun 17, 2026
Jan 25, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
IBM Control Center 6.2.1 and 6.3.1 could allow a remote attacker to enumerate usernames due to an observable discrepancy between login attempts.
1Arm
4Cortex A57 Firmware
Cortex A72 FirmwareCortex A73 Firmware+1 more
Jun 17, 2026
Jan 22, 2025
N/A· v4
5.1 MEDIUM· v3
N/A· v2
In certain circumstances, an issue in Arm Cortex-A57, Cortex-A72 (revisions before r1p0), Cortex-A73 and Cortex-A75 may allow an adversary to gain a weak form of control over the victim's branch history.
1Google
1Android
Jun 17, 2026
Jan 21, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
In multiple locations, there is a possible way to obtain any system permission due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User inter...Show more
In multiple locations, there is a possible way to obtain any system permission due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Show less
1Oracle
1Jd Edwards Enterpriseone Tools
Jun 17, 2026
Jan 21, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Web Runtime SEC). Supported versions that are affected are Prior to 9.2.9.0. Easily exploitable vulnerability allows unauthent...Show more
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Web Runtime SEC). Supported versions that are affected are Prior to 9.2.9.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise JD Edwards EnterpriseOne Tools. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).Show less
1Umbraco
1Umbraco Cms
Jun 17, 2026
Jan 21, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, it's possible to determine whether an account exists based on an analysis of response...Show more
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.Show less
1Microsoft
15Windows 10 1507
Windows 10 1607Windows 10 1809+12 more
Jun 17, 2026
Jan 14, 2025
N/A· v4
5.6 MEDIUM· v3
N/A· v2
Windows Cryptographic Information Disclosure Vulnerability
1Fortinet
2Forticlientems
Fortisoar
Jun 17, 2026
Jan 14, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
An observable response discrepancy vulnerability [CWE-204] in FortiClientEMS 7.4.0, 7.2.0 through 7.2.4, 7.0 all versions, and FortiSOAR 7.5.0, 7.4.0 through 7.4.4, 7.3.0 through 7.3.2, 7.2 all versions, 7.0 all versions...Show more
An observable response discrepancy vulnerability [CWE-204] in FortiClientEMS 7.4.0, 7.2.0 through 7.2.4, 7.0 all versions, and FortiSOAR 7.5.0, 7.4.0 through 7.4.4, 7.3.0 through 7.3.2, 7.2 all versions, 7.0 all versions, 6.4 all versions may allow an unauthenticated attacker to enumerate valid users via observing login request responses.Show less
1Hcltech
1Dryice Myxalytics
Jun 17, 2026
Jan 11, 2025
N/A· v4
3.7 LOW· v3
N/A· v2
HCL MyXalytics is affected by username enumeration vulnerability. This allows a malicious user to perform enumeration of application users, and therefore compile a list of valid usernames.
1Mtons
1Mblog
Jun 17, 2026
Jan 9, 2025
6.3 MEDIUM· v4
3.7 LOW· v3
2.6 LOW· v2
A vulnerability classified as problematic has been found in langhsu Mblog Blog System 3.5.0. Affected is an unknown function of the file /login. The manipulation leads to observable response discrepancy. It is possible t...Show more
A vulnerability classified as problematic has been found in langhsu Mblog Blog System 3.5.0. Affected is an unknown function of the file /login. The manipulation leads to observable response discrepancy. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.Show less
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Jun 17, 2026
Jan 6, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
An access control issue in the component /juis_boxinfo.xml of AVM FRITZ!Box 7530 AX v7.59 allows attackers to obtain sensitive information without authentication. NOTE: this is disputed by the Supplier because it cannot...Show more
An access control issue in the component /juis_boxinfo.xml of AVM FRITZ!Box 7530 AX v7.59 allows attackers to obtain sensitive information without authentication. NOTE: this is disputed by the Supplier because it cannot be reproduced, and the issue report focuses on an unintended configuration with direct Internet exposure.Show less
1Antabot
1White Jotter
Jun 17, 2026
Dec 29, 2024
6.3 MEDIUM· v4
3.7 LOW· v3
2.6 LOW· v2
A vulnerability, which was classified as problematic, has been found in Antabot White-Jotter up to 0.2.2. This issue affects some unknown processing of the file /login. The manipulation of the argument username leads to...Show more
A vulnerability, which was classified as problematic, has been found in Antabot White-Jotter up to 0.2.2. This issue affects some unknown processing of the file /login. The manipulation of the argument username leads to observable response discrepancy. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used.Show less
1Gnu
1Grub2
Jun 17, 2026
Dec 29, 2024
N/A· v4
5.3 MEDIUM· v3
N/A· v2
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
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Jun 17, 2026
Dec 27, 2024
N/A· v4
5.3 MEDIUM· v3
N/A· v2
An issue was discovered in Kurmi Provisioning Suite before 7.9.0.35, 7.10.x through 7.10.0.18, and 7.11.x through 7.11.0.15. An Observable Response Discrepancy vulnerability in the sendPasswordReinitLink action of the un...Show more
An issue was discovered in Kurmi Provisioning Suite before 7.9.0.35, 7.10.x through 7.10.0.18, and 7.11.x through 7.11.0.15. An Observable Response Discrepancy vulnerability in the sendPasswordReinitLink action of the unlogged.do page allows remote attackers to test whether a username is valid or not. This allows confirmation of valid usernames.Show less