CWE-203— Observable Discrepancy (Information Exposure via Side Channel)
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.— MITRE CWE catalog
832 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-203page 3 of 17
- CVE-2021-42016HIGHCVSS 7.5EG 7.52022-03-08
A vulnerability has been identified in RUGGEDCOM i800, RUGGEDCOM i801, RUGGEDCOM i802, RUGGEDCOM i803, RUGGEDCOM M2100, RUGGEDCOM M2100F, RUGGEDCOM M2200, RUGGEDCOM M2200F, RUGGEDCOM M969, RUGGEDCOM M969F, RUGGEDCOM RMC30, RUGGEDCOM RMC838…
- CVE-2021-20049HIGHCVSS 7.5EG 7.52021-12-23
A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x…
- CVE-2021-34580HIGHCVSS 7.5EG 7.52021-10-27
In mymbCONNECT24, mbCONNECT24 <= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted invalid login attempts.
- CVE-2021-38562HIGHCVSS 7.5EG 7.52021-10-18
Best Practical Request Tracker (RT) 4.2 before 4.2.17, 4.4 before 4.4.5, and 5.0 before 5.0.2 allows sensitive information disclosure via a timing attack against lib/RT/REST2/Middleware/Auth.pm.
- CVE-2021-24651HIGHCVSS 7.5EG 7.52021-10-11
The Poll Maker WordPress plugin before 3.4.2 allows unauthenticated users to perform SQL injection via the ays_finish_poll AJAX action. While the result is not disclosed in the response, it is possible to use a timing attack to exfiltrate …
- CVE-2021-37848HIGHCVSS 7.5EG 7.52021-08-02
common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison.
- CVE-2021-34575HIGHCVSS 7.5EG 7.52021-08-02
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.
- CVE-2021-33560HIGHCVSS 7.5EG 7.52021-06-08
Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects u…
- CVE-2021-33838HIGHCVSS 7.5EG 7.52021-06-04
Luca through 1.7.4 on Android allows remote attackers to obtain sensitive information about COVID-19 tracking because requests related to Check-In State occur shortly after requests for Phone Number Registration.
- CVE-2021-22892HIGHCVSS 7.5EG 7.52021-05-27
An information disclosure vulnerability exists in the Rocket.Chat server fixed v3.13, v3.12.2 & v3.11.3 that allowed email addresses to be disclosed by enumeration and validation checks.
- CVE-2020-11287HIGHCVSS 7.5EG 7.52021-02-22
Allowing RTT frames to be linked with non randomized MAC address by comparing the sequence numbers can lead to information disclosure. in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connect…
- CVE-2020-12788HIGHCVSS 7.5EG 7.52020-09-14
CMAC verification functionality in Microchip Atmel ATSAMA5 products is vulnerable to vulnerable to timing and power analysis attacks.
- CVE-2020-25065HIGHCVSS 7.5EG 7.52020-08-31
An issue was discovered on LG mobile devices with Android OS 4.4, 5.0, 5.1, 6.0, 7.0, 7.1, 8.0, 8.1, 9.0, and 10 software. Key logging may occur because of an obsolete API. The LG ID is LVE-SMP-170010 (August 2020).
- CVE-2020-1459HIGHCVSS 7.5EG 7.52020-08-17
An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka "straight-line speculation." To exploit this vulnerability, an attacker with lo…
- CVE-2020-17478HIGHCVSS 7.5EG 7.52020-08-10
ECDSA/EC/Point.pm in Crypt::Perl before 0.33 does not properly consider timing attacks against the EC point multiplication algorithm.
- CVE-2020-11713HIGHCVSS 7.5EG 7.52020-04-12
wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.
- CVE-2019-18850HIGHCVSS 7.5EG 7.52019-12-04
TrevorC2 v1.1/v1.2 fails to prevent fingerprinting primarily via a discrepancy between response headers when responding to different HTTP methods, also via predictible responses when accessing and interacting with the "SITE_PATH_QUERY".
- CVE-2019-3732HIGHCVSS 7.5EG 7.52019-09-30
RSA BSAFE Crypto-C Micro Edition, versions prior to 4.0.5.3 (in 4.0.x) and versions prior to 4.1.3.3 (in 4.1.x), and RSA Micro Edition Suite, versions prior to 4.0.11 (in 4.0.x) versions prior to 4.1.6.1 (in 4.1.x) and versions prior to 4.…
- CVE-2019-3731HIGHCVSS 7.5EG 7.52019-09-30
RSA BSAFE Crypto-C Micro Edition versions prior to 4.1.4 and RSA Micro Edition Suite versions prior to 4.4 are vulnerable to an Information Exposure Through Timing Discrepancy. A malicious remote user could potentially exploit this vulnera…
- CVE-2019-1020002HIGHCVSS 7.5EG 7.52019-07-29
Pterodactyl before 0.7.14 with 2FA allows credential sniffing.
- CVE-2019-10114HIGHCVSS 7.5EG 7.52019-05-16
An Information Exposure issue (issue 2 of 2) was discovered in GitLab Community and Enterprise Edition before 11.7.8, 11.8.x before 11.8.4, and 11.9.x before 11.9.2. During the OAuth authentication process, the application attempts to vali…
- CVE-2019-7217HIGHCVSS 7.5EG 7.52019-05-13
Citrix ShareFile before 19.12 allows User Enumeration. It is possible to enumerate application username based on different server responses using the request to check the otp code. No authentication is required.
- CVE-2019-6602HIGHCVSS 7.5EG 7.52019-03-28
In BIG-IP 11.5.1-11.5.8 and 11.6.1-11.6.3, the Configuration Utility login page may not follow best security practices when handling a malicious request.
- CVE-2017-9735HIGHCVSS 7.5EG 7.52017-06-16
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.
- CVE-2016-6489HIGHCVSS 7.5EG 7.52017-04-14
The RSA and DSA decryption code in Nettle makes it easier for attackers to discover private keys via a cache side channel attack.
- CVE-2023-0361HIGHCVSS 7.4EG 7.52023-02-15
A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To …
- CVE-2024-10463HIGHCVSS 6.5EG 7.52024-10-29
Video frames could have been leaked between origins in some situations. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.
- CVE-2024-7010HIGHCVSS 5.9EG 7.52024-10-29
mudler/localai version 2.17.1 is vulnerable to a Timing Attack. This type of side-channel attack allows an attacker to compromise the cryptosystem by analyzing the time taken to execute cryptographic algorithms. Specifically, in the contex…
- CVE-2021-46778HIGHCVSS 5.6EG 7.52022-08-10
Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention lev…
- CVE-2023-20569HIGHCVSS 4.7EG 7.52023-08-08
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disc…
- CVE-2013-10006HIGHCVSS 2.6EG 7.52023-01-01
A vulnerability classified as problematic was found in Ziftr primecoin up to 0.8.4rc1. Affected by this vulnerability is the function HTTPAuthorized of the file src/bitcoinrpc.cpp. The manipulation of the argument strUserPass/strRPCUserCol…
- CVE-2023-51437HIGHCVSS 7.4EG 7.42024-02-07
Observable timing discrepancy vulnerability in Apache Pulsar SASL Authentication Provider can allow an attacker to forge a SASL Role Token that will pass signature verification. Users are recommended to upgrade to version 2.11.3, 3.0.2, or…
- CVE-2024-23342HIGHCVSS 7.4EG 7.42024-01-23
The `ecdsa` PyPI package is a pure Python implementation of ECC (Elliptic Curve Cryptography) with support for ECDSA (Elliptic Curve Digital Signature Algorithm), EdDSA (Edwards-curve Digital Signature Algorithm) and ECDH (Elliptic Curve D…
- CVE-2022-3143HIGHCVSS 7.4EG 7.42023-01-13
wildfly-elytron: possible timing attacks via use of unsafe comparator. A flaw was found in Wildfly-elytron. Wildfly-elytron uses java.util.Arrays.equals in several places, which is unsafe and vulnerable to timing attacks. To compare values…
- CVE-2019-13666HIGHCVSS 7.4EG 7.42019-11-25
Information leak in storage in Google Chrome prior to 77.0.3865.75 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
- CVE-2019-10764HIGHCVSS 7.4EG 7.42019-11-18
In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recovery of the long-term private key generated by the library under certain conditions. Leakage of a bit-length of the scalar during s…
- CVE-2017-6168HIGHCVSS 7.4EG 7.42017-11-17
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 Ciphe…
- CVE-2023-5981HIGHCVSS 5.9EG 7.42023-11-28
A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
- CVE-2018-3639HIGHCVSS 5.5EG 7.42018-05-22
Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local use…
- CVE-2023-30312HIGHCVSS 7.3EG 7.32024-05-28
An issue discovered in OpenWrt 18.06, 19.07, 21.02, 22.03, and beyond allows off-path attackers to hijack TCP sessions, which could lead to a denial of service, impersonating the client to the server (e.g., for access to files over FTP), a…
- CVE-2018-3615HIGHCVSS 7.3EG 7.32018-08-14
Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user acce…
- CVE-2025-59702HIGHCVSS 7.2EG 7.22025-12-02
Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0 (STS)), allow a physically proximate attacker with elevated privileges to falsify tamper events by accessing internal co…
- CVE-2024-26221HIGHCVSS 7.2EG 7.22024-04-09
Windows DNS Server Remote Code Execution Vulnerability
- CVE-2021-1109HIGHCVSS 7.2EG 7.22021-08-11
NVIDIA camera firmware contains a multistep, timing-related vulnerability where an unauthorized modification by camera resources may result in loss of data integrity or denial of service across several streams.
- CVE-2020-9588HIGHCVSS 7.2EG 7.22020-06-26
Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.
- CVE-2026-72632HIGHCVSS 7.1EG 7.12026-08-13
Observable Discrepancy (CWE-203) in Kibana Fleet can lead to information disclosure via Excavation (CAPEC-116). Fleet removes the Elasticsearch API key value of an enrolled Elastic Agent from the responses of its agent listing capability, …
- CVE-2021-47226HIGHCVSS 7.1EG 7.12024-05-21
In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Invalidate FPU state after a failed XRSTOR from a user buffer Both Intel and AMD consider it to be architecturally valid for XRSTOR to fail with #PF but nonethe…
- CVE-2024-0436HIGHCVSS 5.9EG 7.12024-02-26
Theoretically, it would be possible for an attacker to brute-force the password for an instance in single-user password protection mode via a timing attack given the linear nature of the `!==` used for comparison. The risk is minified by …
- CVE-2025-39702HIGHCVSS 7.0EG 7.02025-09-05
In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.
- CVE-2026-84461MEDIUMCVSS 6.9EG 6.92026-09-25
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the two-factor login step let an attacker try unlimited password guesses for any account without triggering Zammad's normal lockout or rate limiting. The r…
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