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.
CVEs (826)
CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS |
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3Debian EclipseOracle7Communications Cloud Native Core Policy Debian LinuxEnterprise Manager Base Platform+4 moreMay 13, 2026 Jun 16, 2017 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 Jetty through 9.4.x is prone to a timing channel in util/security/Password.java, which makes it easier for remote attackers to obtain access by observing elapsed times before rejection of incorrect passwords. |
WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different respons...Show more |
3Canonical Nettle ProjectRedhat6Enterprise Linux Desktop Enterprise Linux Hpc NodeEnterprise Linux Server+3 moreMay 13, 2026 Apr 14, 2017 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 The RSA and DSA decryption code in Nettle makes it easier for attackers to discover private keys via a cache side channel attack. |
1Revive Adserver 1Revive Adserver May 13, 2026 Mar 28, 2017 N/A· v4 5.3 MEDIUM· v3 5.0 MEDIUM· v2 Revive Adserver before 3.2.3 suffers from Information Exposure Through Discrepancy. It is possible to check whether or not an email address was associated to one or more user accounts on a target Revive Adserver instance...Show more |
6Canonical DebianNodejs+3 more7Debian Linux LinuxLinux Enterprise+4 moreMay 6, 2026 Jun 20, 2016 N/A· v4 5.5 MEDIUM· v3 2.1 LOW· v2 The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timin...Show more |
4Canonical MozillaOracle+1 more15Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+12 moreApr 29, 2026 Feb 8, 2013 N/A· v4 N/A· v3 4.3 MEDIUM· v2 The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows...Show more |
The web mail service in Woppoware PostMaster 4.2.2 (build 3.2.5) generates different error messages depending on whether a user exists or not, which allows remote attackers to determine valid usernames. |
The NPSVG3.dll ActiveX control for Adobe SVG Viewer 3.02 and earlier, when running on Internet Explorer, allows remote attackers to determine the existence of arbitrary files by setting the src property to the target fil...Show more |
The firewall in Astaro Security Linux before 4.024 sends responses to SYN-FIN packets, which makes it easier for remote attackers to obtain information about the system and construct specialized attacks. |
Nettica Corporation INTELLIPEER Email Server 1.01 displays different error messages for valid and invalid account names, which allows remote attackers to determine valid account names. |
ArGoSoft FTP before 1.4.2.1 generates an error message if the user name does not exist instead of prompting for a password, which allows remote attackers to determine valid usernames. |
1Yabbforumsoftware 1Yet Another Bulletin Board Apr 16, 2026 Nov 23, 2004 N/A· v4 N/A· v3 5.0 MEDIUM· v2 YaBB 1 SP 1.3.1 displays different error messages when a user exists or not, which makes it easier for remote attackers to identify valid users and conduct a brute force password guessing attack. |
AIX 4.3.3 through AIX 5.1, when direct remote login is disabled, displays a different message if the password is correct, which allows remote attackers to guess the password via brute force methods. |
CVS 1.11.x before 1.11.17, and 1.12.x before 1.12.9, allows remote attackers to determine the existence of arbitrary files and directories via the -X command for an alternate history file, which causes different error me...Show more |
ProFTPD 1.2.x, including 1.2.8 and 1.2.10, responds in a different amount of time when a given username exists, which allows remote attackers to identify valid usernames by timing the server response. |
Novell iChain 2.2 before Support Pack 1 uses a shorter timeout for a non-existent user than a valid user, which makes it easier for remote attackers to guess usernames and conduct brute force password guessing. |
3Openbsd OpenpkgSiemens4Openpkg OpensshScalance X204rna Ecc Firmware+1 moreApr 16, 2026 May 12, 2003 N/A· v4 N/A· v3 5.0 MEDIUM· v2 OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack. |
3Freebsd OpenbsdOpenssl3Freebsd OpenbsdOpensslApr 16, 2026 Mar 3, 2003 N/A· v4 N/A· v3 5.0 MEDIUM· v2 ssl3_get_record in s3_pkt.c for OpenSSL before 0.9.7a and 0.9.6 before 0.9.6i does not perform a MAC computation if an incorrect block cipher padding is used, which causes an information leak (timing discrepancy) that ma...Show more |
Joe Testa hellbent 01 allows remote attackers to determine the full path of the web root directory via a GET request with a relative path that includes the root's parent, which generates a 403 error message if the parent...Show more |
IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs. |