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CWE-203

751 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 (751)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
2Debian
Erlang
2Debian Linux
Erlang/otp
May 13, 2026
Dec 12, 2017
N/A· v4
5.9 MEDIUM· v3
4.3 MEDIUM· v2
The Erlang otp TLS server answers with different TLS alerts to different error types in the RSA PKCS #1 1.5 padding. This allows an attacker to decrypt content or sign messages with the server's private key (this is a va...Show more
The Erlang otp TLS server answers with different TLS alerts to different error types in the RSA PKCS #1 1.5 padding. This allows an attacker to decrypt content or sign messages with the server's private key (this is a variation of the Bleichenbacher attack).Show less
1F5
9Big Ip Afm
Big Ip AnalyticsBig Ip Apm+6 more
May 13, 2026
Nov 17, 2017
N/A· v4
7.4 HIGH· v3
4.3 MEDIUM· v2
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 Ad...Show more
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) against RSA, which when exploited, may result in plaintext recovery of encrypted messages and/or a Man-in-the-middle (MiTM) attack, despite the attacker not having gained access to the server's private key itself, aka a ROBOT attack.Show less
2Google
Redhat
4Chrome
Enterprise Linux DesktopEnterprise Linux Server+1 more
May 13, 2026
Oct 27, 2017
N/A· v4
5.3 MEDIUM· v3
2.6 LOW· v2
A timing attack in SVG rendering in Google Chrome prior to 60.0.3112.78 for Linux, Windows, and Mac allowed a remote attacker to extract pixel values from a cross-origin page being iframe'd via a crafted HTML page.
6Apache
CanonicalDebian+3 more
15Communications Diameter Signaling Router
Debian LinuxEnterprise Linux Desktop+12 more
May 13, 2026
Aug 10, 2017
N/A· v4
5.9 MEDIUM· v3
4.3 MEDIUM· v2
The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not e...Show more
The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.Show less
1Apple
4Iphone Os
SafariTvos+1 more
May 13, 2026
Jul 20, 2017
N/A· v4
5.3 MEDIUM· v3
2.6 LOW· v2
An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. tvOS before 10.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to...Show more
An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. tvOS before 10.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to conduct a timing side-channel attack to bypass the Same Origin Policy and obtain sensitive information via a crafted web site that uses SVG filters.Show less
3Debian
EclipseOracle
7Communications Cloud Native Core Policy
Debian LinuxEnterprise Manager Base Platform+4 more
May 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.
1Watchguard
1Fireware
May 13, 2026
Apr 22, 2017
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
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
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 responses for valid and invalid usernames. An attacker could exploit this vulnerability to enumerate valid usernames on an affected Firebox.Show less
3Canonical
Nettle ProjectRedhat
6Enterprise Linux Desktop
Enterprise Linux Hpc NodeEnterprise Linux Server+3 more
May 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
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 by examining the message printed by the password recovery system. Such information cannot however be used directly to log in to the system, which requires a username.Show less
6Canonical
DebianNodejs+3 more
7Debian Linux
LinuxLinux Enterprise+4 more
May 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
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 timing side-channel attack.Show less
4Canonical
MozillaOracle+1 more
15Enterprise Linux Desktop
Enterprise Linux EusEnterprise Linux Server+12 more
Apr 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 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 remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.Show less
1Woppoware
1Postmaster
Apr 16, 2026
May 18, 2005
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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.
1Adobe
1Svg Viewer
Apr 16, 2026
May 5, 2005
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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 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 filename and using Javascript to determine if the web page immediately stops loading, which indicates whether the file exists or not.Show less
1Sophos
1Astaro Security Linux
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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.
1Nettica
1Intellipeer Email Server
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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.
1Argosoft
1Ftp Server
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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.
1Ibm
1Aix
Apr 16, 2026
Nov 23, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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.
1Gnu
1Cvs
Apr 16, 2026
Oct 20, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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
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 messages to be returned.Show less
1Proftpd
1Proftpd
Apr 16, 2026
Oct 15, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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.