CWE-203
Observable Discrepancy
Description
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-189
CVEs mapped to this weakness (762)
page 2 of 39| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2019-9815 | Hig | 0.53 | 8.1 | 0.02 | Jul 23, 2019 | If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use… | ||
| CVE-2017-6168 | Hig | 0.53 | 7.4 | 0.20 | Nov 17, 2017 | On BIG-IP versions 11.6.0-11.6.2 (fixed in 11.6.2 HF1), 12.0.0-12.1.2 HF1 (fixed in 12.1.2 HF2), or 13.0.0-13.0.0 HF2 (fixed in 13.0.0 HF3) a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack)… | ||
| CVE-2026-41588 | Cri | 0.52 | 9.0 | 0.00 | May 8, 2026 | RELATE is a web-based courseware package. Prior to commit 2f68e16, there is a timing attack vulnerability in course/auth.py — check_sign_in_key(). This issue has been patched via commit 2f68e16. | ||
| CVE-2023-25529 | Hig | 0.52 | 8.0 | 0.01 | Sep 20, 2023 | NVIDIA DGX H100 BMC and DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause a leak of another user’s session token by observing timing discrepancies between server responses. A successful exploit of this vulnerability may… | ||
| CVE-2024-43095 | Hig | 0.51 | 7.8 | 0.00 | Jan 21, 2025 | 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. | ||
| CVE-2023-21337 | Hig | 0.51 | 7.8 | 0.00 | Oct 30, 2023 | In InputMethod, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not… | ||
| CVE-2023-21324 | Hig | 0.51 | 7.8 | 0.00 | Oct 30, 2023 | In Package Installer, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not… | ||
| CVE-2023-21298 | Hig | 0.51 | 7.8 | 0.00 | Oct 30, 2023 | In Slice, there is a possible disclosure of installed applications due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. | ||
| CVE-2022-37459 | Hig | 0.51 | 7.8 | 0.00 | Aug 17, 2022 | Ampere Altra devices before 1.08g and Ampere Altra Max devices before 2.05a allow attackers to control the predictions for return addresses and potentially hijack code flow to execute arbitrary code via a side-channel attack, aka a "Retbleed" issue. | ||
| CVE-2026-59640 | Hig | 0.50 | — | 0.00 | Aug 3, 2026 | In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series)… | ||
| CVE-2023-26215 | Hig | 0.50 | 7.7 | 0.01 | May 25, 2023 | The server component of TIBCO Software Inc.'s TIBCO EBX Add-ons contains a vulnerability that allows an attacker with low-privileged application access to read system files that are accessible to the web server. Affected releases are TIBCO Software Inc.'s TIBCO EBX Add-ons:… | ||
| CVE-2023-54357 | Hig | 0.49 | 7.5 | 0.01 | Jun 19, 2026 | Joomla com_booking component 2.4.9 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate user accounts by exploiting the getUserData function in the customer controller. Attackers can send GET requests to index.php with… | ||
| CVE-2022-50800 | — | Hig | 0.49 | 7.5 | 0.00 | Dec 30, 2025 | H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint and analyze response messages to distinguish between… | |
| CVE-2025-63094 | Hig | 0.49 | 7.5 | 0.01 | Dec 10, 2025 | XiangShan Nanhu V2 and XiangShan Kunmighu V3 were discovered to use speculative execution and indirect branch prediction, allowing attackers to access sensitive information via side-channel analysis of the data cache. | ||
| CVE-2025-11145 | Hig | 0.49 | 7.5 | 0.00 | Oct 24, 2025 | Observable Discrepancy, Exposure of Sensitive Information to an Unauthorized Actor, Exposure of Private Personal Information to an Unauthorized Actor vulnerability in CBK Soft Software Hardware Electronic Computer Systems Industry and Trade Inc. EnVision allows Account… | ||
| CVE-2025-41252 | Hig | 0.49 | 7.5 | 0.01 | Sep 29, 2025 | Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts. Impact: Username enumeration → facilitates unauthorized access. … | ||
| CVE-2025-40732 | Hig | 0.49 | 7.5 | 0.00 | Jun 30, 2025 | user enumeration vulnerability in Daily Expense Manager v1.0. To exploit this vulnerability a POST request must be sent using the name parameter in /check.php | ||
| CVE-2024-13939 | Hig | 0.49 | 7.5 | 0.00 | Mar 28, 2025 | String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of… | ||
| CVE-2025-1468 | Hig | 0.49 | 7.5 | 0.01 | Mar 18, 2025 | An unauthenticated remote attacker can gain access to sensitive information including authentication information when using CODESYS OPC UA Server with the non-default Basic128Rsa15 security policy. | ||
| CVE-2024-41335 | Hig | 0.49 | 7.5 | 0.00 | Feb 27, 2025 | 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… |
- risk 0.53cvss 8.1epss 0.02
If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use…
- risk 0.53cvss 7.4epss 0.20
On BIG-IP versions 11.6.0-11.6.2 (fixed in 11.6.2 HF1), 12.0.0-12.1.2 HF1 (fixed in 12.1.2 HF2), or 13.0.0-13.0.0 HF2 (fixed in 13.0.0 HF3) a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack)…
- risk 0.52cvss 9.0epss 0.00
RELATE is a web-based courseware package. Prior to commit 2f68e16, there is a timing attack vulnerability in course/auth.py — check_sign_in_key(). This issue has been patched via commit 2f68e16.
- risk 0.52cvss 8.0epss 0.01
NVIDIA DGX H100 BMC and DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause a leak of another user’s session token by observing timing discrepancies between server responses. A successful exploit of this vulnerability may…
- risk 0.51cvss 7.8epss 0.00
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.
- risk 0.51cvss 7.8epss 0.00
In InputMethod, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not…
- risk 0.51cvss 7.8epss 0.00
In Package Installer, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not…
- risk 0.51cvss 7.8epss 0.00
In Slice, there is a possible disclosure of installed applications due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- risk 0.51cvss 7.8epss 0.00
Ampere Altra devices before 1.08g and Ampere Altra Max devices before 2.05a allow attackers to control the predictions for return addresses and potentially hijack code flow to execute arbitrary code via a side-channel attack, aka a "Retbleed" issue.
- risk 0.50cvss —epss 0.00
In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series)…
- risk 0.50cvss 7.7epss 0.01
The server component of TIBCO Software Inc.'s TIBCO EBX Add-ons contains a vulnerability that allows an attacker with low-privileged application access to read system files that are accessible to the web server. Affected releases are TIBCO Software Inc.'s TIBCO EBX Add-ons:…
- risk 0.49cvss 7.5epss 0.01
Joomla com_booking component 2.4.9 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate user accounts by exploiting the getUserData function in the customer controller. Attackers can send GET requests to index.php with…
- risk 0.49cvss 7.5epss 0.00
H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint and analyze response messages to distinguish between…
- risk 0.49cvss 7.5epss 0.01
XiangShan Nanhu V2 and XiangShan Kunmighu V3 were discovered to use speculative execution and indirect branch prediction, allowing attackers to access sensitive information via side-channel analysis of the data cache.
- risk 0.49cvss 7.5epss 0.00
Observable Discrepancy, Exposure of Sensitive Information to an Unauthorized Actor, Exposure of Private Personal Information to an Unauthorized Actor vulnerability in CBK Soft Software Hardware Electronic Computer Systems Industry and Trade Inc. EnVision allows Account…
- risk 0.49cvss 7.5epss 0.01
Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts. Impact: Username enumeration → facilitates unauthorized access. …
- risk 0.49cvss 7.5epss 0.00
user enumeration vulnerability in Daily Expense Manager v1.0. To exploit this vulnerability a POST request must be sent using the name parameter in /check.php
- risk 0.49cvss 7.5epss 0.00
String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of…
- risk 0.49cvss 7.5epss 0.01
An unauthenticated remote attacker can gain access to sensitive information including authentication information when using CODESYS OPC UA Server with the non-default Basic128Rsa15 security policy.
- risk 0.49cvss 7.5epss 0.00
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…