← Back
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.

JSON object

Loading...

CVEs (826)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
CVE-2002-0514
1Openbsd
1Openbsd
Apr 16, 2026
Aug 12, 2002
N/A· v4
N/A· v3
5.0 MEDIUM· v2
PF in OpenBSD 3.0 with the return-rst rule sets the TTL to 128 in the RST packet, which allows remote attackers to determine if a port is being filtered because the TTL is different than the default TTL.
CVE-2002-0208
1Network.associates
1Pgpfire
Apr 16, 2026
May 16, 2002
N/A· v4
N/A· v3
5.0 MEDIUM· v2
PGP Security PGPfire 7.1 for Windows alters the system's TCP/IP stack and modifies packets in ICMP error messages in a way that allows remote attackers to determine that the system is running PGPfire.
CVE-2001-1528
1Amtote
1Homebet
Apr 16, 2026
Dec 31, 2001
N/A· v4
N/A· v3
5.0 MEDIUM· v2
AmTote International homebet program returns different error messages when invalid account numbers and PIN codes are provided, which allows remote attackers to determine the existence of valid account numbers via a brute...Show more
AmTote International homebet program returns different error messages when invalid account numbers and PIN codes are provided, which allows remote attackers to determine the existence of valid account numbers via a brute force attack.Show less
CVE-2001-1483
1Nrl.navy
1One Time Passwords In Everything
Apr 16, 2026
Dec 31, 2001
N/A· v4
N/A· v3
5.0 MEDIUM· v2
One-Time Passwords In Everything (a.k.a OPIE) 2.32 and 2.4 allows remote attackers to determine the existence of user accounts by printing random passphrases if the user account does not exist and static passphrases if t...Show more
One-Time Passwords In Everything (a.k.a OPIE) 2.32 and 2.4 allows remote attackers to determine the existence of user accounts by printing random passphrases if the user account does not exist and static passphrases if the user account does exist.Show less
CVE-2001-1387
1Netfilter
1Iptables
Apr 16, 2026
Nov 5, 2001
N/A· v4
N/A· v3
2.1 LOW· v2
iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes iptables to generate different responses than specified by the administrator, possib...Show more
iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes iptables to generate different responses than specified by the administrator, possibly leading to an information leak.Show less
CVE-2000-1117
1Ibm
1Lotus Notes
Apr 16, 2026
Jan 9, 2001
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The Extended Control List (ECL) feature of the Java Virtual Machine (JVM) in Lotus Notes Client R5 allows malicious web site operators to determine the existence of files on the client by measuring delays in the executio...Show more
The Extended Control List (ECL) feature of the Java Virtual Machine (JVM) in Lotus Notes Client R5 allows malicious web site operators to determine the existence of files on the client by measuring delays in the execution of the getSystemResource method.Show less