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
876 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-203page 4 of 18
- 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…
- CVE-2026-53933MEDIUMCVSS 6.9EG 6.92026-09-08
Maravel, a PHP framework oriented towards dependency injection, prior to version 10.73.1 has a side-channel information disclosure issue. When a route was compiled with dynamic placeholders (e.g., `/api/v1/users/{id}`), the raw string plac…
- CVE-2026-58503MEDIUMCVSS 6.9EG 6.92026-07-10
Frappe is a full-stack web application framework. Prior to 16.16.0 and 15.106.0, user enumeration could be performed via the reset_password endpoint. This issue is fixed in versions 16.16.0 and 15.106.0.
- CVE-2026-47379MEDIUMCVSS 6.9EG 6.92026-06-05
NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, the shared-view password check fell back to strict-equality (===) comparison for legacy plaintext passwords, leaking the password's length and per-character pre…
- CVE-2025-6056MEDIUMCVSS 6.9EG 6.92025-07-04
Timing difference in password reset in Ergon Informatik AG's Airlock IAM 7.7.9, 8.0.8, 8.1.7, 8.2.4 and 8.3.1 allows unauthenticated attackers to enumerate usernames.
- CVE-2026-97782MEDIUMCVSS 6.8EG 6.82026-10-13
Observable discrepancy in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
- CVE-2020-11683MEDIUMCVSS 6.8EG 6.82020-09-14
A timing side channel was discovered in AT91bootstrap before 3.9.2. It can be exploited by attackers with physical access to forge CMAC values and subsequently boot arbitrary code on an affected system.
- CVE-2026-19134MEDIUMCVSS 6.5EG 6.52026-11-05
A vulnerability in OpenText OpenText Directory Services (OTDS) allows Black Box Reverse Engineering. This issue affects OpenText Directory Services (OTDS): from 22.1 to 26.2
- CVE-2026-121138MEDIUMCVSS 6.5EG 6.52026-11-03
Observable discrepancy in CORS in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-121223MEDIUMCVSS 6.5EG 6.52026-11-03
Observable discrepancy in Media in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-87459MEDIUMCVSS 6.5EG 6.52026-09-09
Observable discrepancy in Select in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-87620MEDIUMCVSS 6.5EG 6.52026-09-09
Observable discrepancy in SVG in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-87623MEDIUMCVSS 6.5EG 6.52026-09-09
Observable discrepancy in DOM in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-87478MEDIUMCVSS 6.5EG 6.52026-09-09
Observable discrepancy in Autofill in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-78955MEDIUMCVSS 6.5EG 6.52026-08-25
Observable discrepancy in PerformanceAPIs in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-23937MEDIUMCVSS 6.5EG 6.52026-08-18
The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity.
- CVE-2026-14085MEDIUMCVSS 6.5EG 6.52026-06-30
Side-channel information leakage in CSS in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-14074MEDIUMCVSS 6.5EG 6.52026-06-30
Side-channel information leakage in WebAuthentication in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-14071MEDIUMCVSS 6.5EG 6.52026-06-30
Side-channel information leakage in WebAudio in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-13922MEDIUMCVSS 6.5EG 6.52026-06-30
Side-channel information leakage in Paint in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-11289MEDIUMCVSS 6.5EG 6.52026-06-04
Side-channel information leakage in Paint in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-11284MEDIUMCVSS 6.5EG 6.52026-06-04
Side-channel information leakage in PerformanceAPIs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
- CVE-2026-28490MEDIUMCVSS 6.5EG 6.52026-03-16
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a cryptographic padding oracle vulnerability was identified in the Authlib Python library concerning the implementation of the JSON Web Encr…
- CVE-2024-43763MEDIUMCVSS 6.5EG 6.52025-01-21
In build_read_multi_rsp of gatt_sr.cc, there is a possible denial of service due to a logic error in the code. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction…
- CVE-2023-30308MEDIUMCVSS 6.5EG 6.52024-05-28
An issue discovered in Ruijie EG210G-P, Ruijie EG105G-V2, Ruijie NBR, and Ruijie EG105G routers allows attackers to hijack TCP sessions which could lead to a denial of service.
- CVE-2023-5388MEDIUMCVSS 6.5EG 6.52024-03-19
NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird…
- CVE-2023-6240MEDIUMCVSS 6.5EG 6.52024-02-04
A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.
- CVE-2024-0564MEDIUMCVSS 6.5EG 6.52024-01-30
A flaw was found in the Linux kernel's memory deduplication mechanism. The max page sharing of Kernel Samepage Merging (KSM), added in Linux kernel version 4.4.0-96.119, can create a side channel. When the attacker and the victim share the…
- CVE-2023-4421MEDIUMCVSS 6.5EG 6.52023-12-12
The NSS code used for checking PKCS#1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks. Both the overall correctness of the padding as well as the length of the encrypted message was leaking through timing side-c…
- CVE-2023-40090MEDIUMCVSS 6.5EG 6.52023-12-04
In BTM_BleVerifySignature of btm_ble.cc, there is a possible way to bypass signature validation due to side channel information disclosure. This could lead to remote escalation of privilege with no additional execution privileges needed. U…
- CVE-2022-40982MEDIUMCVSS 6.5EG 6.52023-08-11
Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
- CVE-2023-20575MEDIUMCVSS 6.5EG 6.52023-07-11
A potential power side-channel vulnerability in some AMD processors may allow an authenticated attacker to use the power reporting functionality to monitor a program’s execution inside an AMD SEV VM potentially resulting in a leak of se…
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