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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.

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CVEs (826)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Nuvoton
1Npct75x Firmware
Jun 17, 2026
Aug 10, 2021
N/A· v4
3.8 LOW· v3
1.9 LOW· v2
An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Obs...Show more
An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.Show less
1Linux
1Linux Kernel
Jun 17, 2026
Aug 8, 2021
N/A· v4
3.3 LOW· v3
2.1 LOW· v2
net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCT...Show more
net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.Show less
2Quarkus
Redhat
13Build Of Quarkus
Codeready StudioData Grid+10 more
Jun 17, 2026
Aug 5, 2021
N/A· v4
5.3 MEDIUM· v3
3.5 LOW· v2
A flaw was found in Wildfly Elytron in versions prior to 1.10.14.Final, prior to 1.15.5.Final and prior to 1.16.1.Final where ScramServer may be susceptible to Timing Attack if enabled. The highest threat of this vulnera...Show more
A flaw was found in Wildfly Elytron in versions prior to 1.10.14.Final, prior to 1.15.5.Final and prior to 1.16.1.Final where ScramServer may be susceptible to Timing Attack if enabled. The highest threat of this vulnerability is confidentiality.Show less
1Pengutronix
1Barebox
Jun 17, 2026
Aug 2, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison.
1Mbconnectline
2Mbconnect24
Mymbconnect24
Jun 17, 2026
Aug 2, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
In MB connect line mymbCONNECT24, mbCONNECT24 in versions <= 2.8.0 an unauthenticated user can enumerate valid users by checking what kind of response the server sends.
3Debian
FedoraprojectLinux
3Debian Linux
FedoraLinux Kernel
Oct 8, 2026
Aug 2, 2021
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibi...Show more
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.Show less
3Debian
FedoraprojectLinux
3Debian Linux
FedoraLinux Kernel
Oct 8, 2026
Aug 2, 2021
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not...Show more
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.Show less
1Meow Hash Project
1Meow Hash
Jun 17, 2026
Jul 30, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-runnin...Show more
Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-running web service that allows the attacker to infer collisions by measuring timing differences.Show less
1Tecnick
1Tcexam
Jun 17, 2026
Jul 30, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An exposure of sensitive information vulnerability exists in TCExam <= 14.8.1. If a password reset request was made for an email address that was not registered with a user then we would be presented with an ‘unknown ema...Show more
An exposure of sensitive information vulnerability exists in TCExam <= 14.8.1. If a password reset request was made for an email address that was not registered with a user then we would be presented with an ‘unknown email’ error. If an email is given that is registered with a user then this error will not appear. A malicious actor could abuse this to enumerate the email addresses ofShow less
2Arm
Debian
2Debian Linux
Mbed Tls
Jun 17, 2026
Jul 19, 2021
N/A· v4
4.7 MEDIUM· v3
1.9 LOW· v2
An issue was discovered in Arm Mbed TLS before 2.24.0. An attacker can recover a private key (for RSA or static Diffie-Hellman) via a side-channel attack against generation of base blinding/unblinding values.
2Arm
Debian
2Debian Linux
Mbed Tls
Jun 17, 2026
Jul 19, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbe...Show more
An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable.Show less
2Arm
Debian
2Debian Linux
Mbed Tls
Jun 17, 2026
Jul 19, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.
1Apache
1Teaclave Sgx Sdk
Jun 17, 2026
Jul 14, 2021
N/A· v4
4.9 MEDIUM· v3
4.0 MEDIUM· v2
In Apache Teaclave Rust SGX SDK 1.1.3, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-...Show more
In Apache Teaclave Rust SGX SDK 1.1.3, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.Show less
3Arm
DebianFedoraproject
3Debian Linux
FedoraMbed Tls
Jun 17, 2026
Jul 14, 2021
N/A· v4
4.9 MEDIUM· v3
4.0 MEDIUM· v2
In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-ch...Show more
In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.Show less
1Wolfssl
1Wolfssl
Jun 17, 2026
Jul 14, 2021
N/A· v4
4.9 MEDIUM· v3
4.0 MEDIUM· v2
In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attac...Show more
In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.Show less
1Qsan
1Storage Manager
Jun 17, 2026
Jul 7, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
Observable behavioral discrepancy vulnerability in QSAN Storage Manager allows remote attackers to obtain the system information without permissions. Suggest contacting with QSAN and refer to recommendations in QSAN Docu...Show more
Observable behavioral discrepancy vulnerability in QSAN Storage Manager allows remote attackers to obtain the system information without permissions. Suggest contacting with QSAN and refer to recommendations in QSAN Document.Show less
3Debian
FedoraprojectIntel
7Celeron Processors Firmware
Core Processors FirmwareDebian Linux+4 more
Jun 17, 2026
Jun 9, 2021
N/A· v4
6.5 MEDIUM· v3
2.1 LOW· v2
Observable response discrepancy in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.
2Fedoraproject
Intel
7Brand Verification Tool
Celeron Processors FirmwareCore Processors Firmware+4 more
Jun 17, 2026
Jun 9, 2021
N/A· v4
6.5 MEDIUM· v3
2.1 LOW· v2
Observable response discrepancy in floating-point operations for some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.
1Intel
4Integrated Performance Primitives Cryptography
Sgx DcapSgx Psw+1 more
Jun 17, 2026
Jun 9, 2021
N/A· v4
4.7 MEDIUM· v3
2.1 LOW· v2
Observable timing discrepancy in Intel(R) IPP before version 2020 update 1 may allow authorized user to potentially enable information disclosure via local access.
3Debian
IntelNetapp
5Debian Linux
Fas/aff BiosHci Compute Node Bios+2 more
Oct 8, 2026
Jun 9, 2021
N/A· v4
3.3 LOW· v3
2.1 LOW· v2
Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.