VYPR

CWE-203

Observable Discrepancy

BaseIncomplete

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)

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  • CVE-2022-1318MedApr 20, 2022
    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…

  • CVE-2026-23937MedAug 18, 2026
    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.

  • CVE-2021-45901MedFeb 10, 2022
    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.

  • CVE-2021-44848MedDec 13, 2021
    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.

  • CVE-2021-38153MedSep 22, 2021
    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…

  • CVE-2021-27342MedMay 17, 2021
    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

  • CVE-2020-1926MedMar 16, 2021
    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

  • CVE-2020-14002MedJun 29, 2020
    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).

  • CVE-2019-16516MedJan 23, 2020
    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.

  • CVE-2015-0837MedNov 29, 2019
    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."

  • CVE-2019-16863MedNov 14, 2019
    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.

  • CVE-2019-13377MedAug 15, 2019
    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…

  • CVE-2019-13383MedJul 16, 2019
    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.

  • CVE-2019-11578MedApr 28, 2019
    risk 0.39cvss 5.9epss 0.02

    auth.c in dhcpcd before 7.2.1 allowed attackers to infer secrets by performing latency attacks.

  • CVE-2019-9494MedApr 17, 2019
    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…

  • CVE-2017-15533MedMay 17, 2018
    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…

  • CVE-2026-73630MedAug 14, 2026
    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…

  • CVE-2026-47379MedJun 23, 2026
    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…

  • CVE-2025-47872MedAug 8, 2025
    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…

  • CVE-2025-29780MedMar 14, 2025
    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,…