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 (798)
page 10 of 40| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2022-1318 | Med | 0.40 | 6.2 | 0.00 | Apr 20, 2022 | Hills ComNav version 3002-19 suffers from a weak communication channel. Traffic across the local network for the configuration pages can be viewed by a malicious actor. The size of certain communications packets are predictable. This would allow an attacker to learn the state of… | ||
| CVE-2026-23937 | Med | 0.39 | — | 0.00 | Aug 18, 2026 | The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity. | ||
| CVE-2021-45901 | Med | 0.39 | 5.3 | 0.14 | Feb 10, 2022 | The password-reset form in ServiceNow Orlando provides different responses to invalid authentication attempts depending on whether the username exists. | ||
| CVE-2021-44848 | Med | 0.39 | 5.3 | 0.23 | Dec 13, 2021 | In Cibele Thinfinity VirtualUI before 3.0, /changePassword returns different responses for invalid authentication requests depending on whether the username exists. | ||
| CVE-2021-38153 | Med | 0.39 | 5.9 | 0.06 | Sep 22, 2021 | Some components in Apache Kafka use `Arrays.equals` to validate a password or key, which is vulnerable to timing attacks that make brute force attacks for such credentials more likely to be successful. Users should upgrade to 2.8.1 or higher, or 3.0.0 or higher where this… | ||
| CVE-2021-27342 | Med | 0.39 | 5.9 | 0.05 | May 17, 2021 | An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack | ||
| CVE-2020-1926 | Med | 0.39 | 5.9 | 0.02 | Mar 16, 2021 | Apache Hive cookie signature verification used a non constant time comparison which is known to be vulnerable to timing attacks. This could allow recovery of another users cookie signature. The issue was addressed in Apache Hive 2.3.8 | ||
| CVE-2020-14002 | Med | 0.39 | 5.9 | 0.03 | Jun 29, 2020 | PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). | ||
| CVE-2019-16516 | Med | 0.39 | 5.3 | 0.19 | Jan 23, 2020 | An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username. | ||
| CVE-2015-0837 | Med | 0.39 | 5.9 | 0.02 | Nov 29, 2019 | The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack." | ||
| CVE-2019-16863 | Med | 0.39 | 5.9 | 0.03 | Nov 14, 2019 | STMicroelectronics ST33TPHF2ESPI TPM devices before 2019-09-12 allow attackers to extract the ECDSA private key via a side-channel timing attack because ECDSA scalar multiplication is mishandled, aka TPM-FAIL. | ||
| CVE-2019-13377 | Med | 0.39 | 5.9 | 0.03 | Aug 15, 2019 | The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information… | ||
| CVE-2019-13383 | Med | 0.39 | 5.3 | 0.14 | Jul 16, 2019 | In CentOS-WebPanel.com (aka CWP) CentOS Web Panel 0.9.8.846, the Login process allows attackers to check whether a username is valid by reading the HTTP response. | ||
| CVE-2019-11578 | Med | 0.39 | 5.9 | 0.02 | Apr 28, 2019 | auth.c in dhcpcd before 7.2.1 allowed attackers to infer secrets by performing latency attacks. | ||
| CVE-2019-9494 | Med | 0.39 | 5.9 | 0.04 | Apr 17, 2019 | The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full… | ||
| CVE-2017-15533 | Med | 0.39 | 5.9 | 0.02 | May 17, 2018 | Symantec SSL Visibility (SSLV) 3.8.4FC, 3.10 prior to 3.10.4.1, 3.11, and 3.12 prior to 3.12.2.1 are vulnerable to the Return of the Bleichenbacher Oracle Threat (ROBOT) attack. All affected SSLV versions act as weak oracles according the oracle classification used in the ROBOT… | ||
| CVE-2026-73630 | Med | 0.38 | 5.8 | 0.00 | Aug 14, 2026 | SiYuan before v3.7.4 contains an information disclosure vulnerability in the /api/filetree/authFilePublishAccess endpoint, which is registered with CheckAuth only and is reachable anonymously. The endpoint never sets a failure code, so its outcome is signalled entirely by the… | ||
| CVE-2026-47379 | Med | 0.38 | — | 0.00 | Jun 23, 2026 | NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, the shared-view password check fell back to strict-equality (===) comparison for legacy plaintext passwords, leaking the password's length and per-character prefix through response timing. This… | ||
| CVE-2025-47872 | — | Med | 0.38 | 5.8 | 0.00 | Aug 8, 2025 | The public-facing product registration endpoint server responds differently depending on whether the S/N is valid and unregistered, valid but already registered, or does not exist in the database. Combined with the fact that serial numbers are sequentially assigned, this… | |
| CVE-2025-29780 | Med | 0.38 | — | 0.00 | Mar 14, 2025 | Post-Quantum Secure Feldman's Verifiable Secret Sharing provides a Python implementation of Feldman's Verifiable Secret Sharing (VSS) scheme. In versions 0.8.0b2 and prior, the `feldman_vss` library contains timing side-channel vulnerabilities in its matrix operations,… |
- risk 0.40cvss 6.2epss 0.00
Hills ComNav version 3002-19 suffers from a weak communication channel. Traffic across the local network for the configuration pages can be viewed by a malicious actor. The size of certain communications packets are predictable. This would allow an attacker to learn the state of…
- risk 0.39cvss —epss 0.00
The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity.
- risk 0.39cvss 5.3epss 0.14
The password-reset form in ServiceNow Orlando provides different responses to invalid authentication attempts depending on whether the username exists.
- risk 0.39cvss 5.3epss 0.23
In Cibele Thinfinity VirtualUI before 3.0, /changePassword returns different responses for invalid authentication requests depending on whether the username exists.
- risk 0.39cvss 5.9epss 0.06
Some components in Apache Kafka use `Arrays.equals` to validate a password or key, which is vulnerable to timing attacks that make brute force attacks for such credentials more likely to be successful. Users should upgrade to 2.8.1 or higher, or 3.0.0 or higher where this…
- risk 0.39cvss 5.9epss 0.05
An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
- risk 0.39cvss 5.9epss 0.02
Apache Hive cookie signature verification used a non constant time comparison which is known to be vulnerable to timing attacks. This could allow recovery of another users cookie signature. The issue was addressed in Apache Hive 2.3.8
- risk 0.39cvss 5.9epss 0.03
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).
- risk 0.39cvss 5.3epss 0.19
An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username.
- risk 0.39cvss 5.9epss 0.02
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
- risk 0.39cvss 5.9epss 0.03
STMicroelectronics ST33TPHF2ESPI TPM devices before 2019-09-12 allow attackers to extract the ECDSA private key via a side-channel timing attack because ECDSA scalar multiplication is mishandled, aka TPM-FAIL.
- risk 0.39cvss 5.9epss 0.03
The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information…
- risk 0.39cvss 5.3epss 0.14
In CentOS-WebPanel.com (aka CWP) CentOS Web Panel 0.9.8.846, the Login process allows attackers to check whether a username is valid by reading the HTTP response.
- risk 0.39cvss 5.9epss 0.02
auth.c in dhcpcd before 7.2.1 allowed attackers to infer secrets by performing latency attacks.
- risk 0.39cvss 5.9epss 0.04
The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full…
- risk 0.39cvss 5.9epss 0.02
Symantec SSL Visibility (SSLV) 3.8.4FC, 3.10 prior to 3.10.4.1, 3.11, and 3.12 prior to 3.12.2.1 are vulnerable to the Return of the Bleichenbacher Oracle Threat (ROBOT) attack. All affected SSLV versions act as weak oracles according the oracle classification used in the ROBOT…
- risk 0.38cvss 5.8epss 0.00
SiYuan before v3.7.4 contains an information disclosure vulnerability in the /api/filetree/authFilePublishAccess endpoint, which is registered with CheckAuth only and is reachable anonymously. The endpoint never sets a failure code, so its outcome is signalled entirely by the…
- risk 0.38cvss —epss 0.00
NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, the shared-view password check fell back to strict-equality (===) comparison for legacy plaintext passwords, leaking the password's length and per-character prefix through response timing. This…
- risk 0.38cvss 5.8epss 0.00
The public-facing product registration endpoint server responds differently depending on whether the S/N is valid and unregistered, valid but already registered, or does not exist in the database. Combined with the fact that serial numbers are sequentially assigned, this…
- risk 0.38cvss —epss 0.00
Post-Quantum Secure Feldman's Verifiable Secret Sharing provides a Python implementation of Feldman's Verifiable Secret Sharing (VSS) scheme. In versions 0.8.0b2 and prior, the `feldman_vss` library contains timing side-channel vulnerabilities in its matrix operations,…