Common Weakness Enumeration

CWE-208

Allowed

Observable Timing Discrepancy

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

194 vulnerabilities reference this CWE, most recent first.

CVE-2026-44061 (GCVE-0-2026-44061)

Vulnerability from cvelistv5 – Published: 2026-05-21 07:34 – Updated: 2026-05-21 12:46
VLAI
Title
DES-ECB auth with timing side channel
Summary
Netatalk 1.5.0 through 4.4.2 uses DES-ECB for authentication with a timing side channel, which allows a remote attacker to recover authentication credentials via timing analysis.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 12:46 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
securin CNA
References
Impacted products
Vendor Product Version
Netatalk Netatalk Affected: 1.5.0 , ≤ 4.4.2 (semver)
Unaffected: 4.5.0 (semver)
Create a notification for this product.
Date Public
2026-05-13 00:00
Credits
Arjun Basnet from Securin
Show details on NVD website
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CVE-2026-43606 (GCVE-0-2026-43606)

Vulnerability from cvelistv5 – Published: 2026-08-11 16:49 – Updated: 2026-08-12 13:05
VLAI
Summary
Observable Timing Discrepancy in the AMD Vitis Libraries ECDSA secp256k1 component could allow attackers with local access to potentially perform timing analysis or electromagnetic emanation attacks, resulting in high confidentiality and integrity impact due to the exposure of private cryptographic keys.
Severity
7.7 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 13:05 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
AMD CNA
References
Impacted products
Date Public
2026-08-11 16:47
Show details on NVD website
To clipboard 

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CVE-2026-43514 (GCVE-0-2026-43514)

Vulnerability from cvelistv5 – Published: 2026-05-12 15:32 – Updated: 2026-05-13 17:22
VLAI
Title
Apache Tomcat: AJP secret compared in non-constant time
Summary
Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 17:22 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
apache CNA
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.21 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.54 (semver)
Affected: 9.0.0.M1 , ≤ 9.0.117 (semver)
Affected: 8.5.0 , ≤ 8.5.100 (semver)
Affected: 7.0.0 , ≤ 7.0.109 (semver)
Unknown: 0 , < 7.00 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-42602 (GCVE-0-2026-42602)

Vulnerability from cvelistv5 – Published: 2026-05-13 20:12 – Updated: 2026-05-14 12:52
VLAI
Title
azureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replay
Summary
azureauthextension is the Azure Authenticator Extension. From 0.124.0 to 0.150.0, a server-side authentication bypass in azureauthextension allows any party who holds a single valid Azure access token for any scope the collector's configured identity can mint for to authenticate to any OpenTelemetry receiver that uses auth: azure_auth. The extension's Authenticate method does not validate incoming bearer tokens as JWTs. Instead, it calls its own configured credential to obtain an access token and compares the client's token to the result with string equality — and the scope for that server-side token request is taken from the client-supplied Host header. As a result, a token minted for any Azure resource the service principal has ever been issued a token for (ARM, Graph, Key Vault, Storage, etc.) will authenticate to the collector if the attacker picks a matching Host. Tokens are replayable for the full issued lifetime (commonly several hours for managed identity tokens).
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 12:51 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
  • CWE-287 - Improper Authentication
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-294 - Authentication Bypass by Capture-replay
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
open-telemetry opentelemetry-collector-contrib Affected: >= 0.124.0, <= 0.150.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41588 (GCVE-0-2026-41588)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:51 – Updated: 2026-05-08 23:27
VLAI
Title
RELATE: Timing Attack Vulnerability in course/auth.py — check_sign_in_key()
Summary
RELATE is a web-based courseware package. Prior to commit 2f68e16, there is a timing attack vulnerability in course/auth.py — check_sign_in_key(). This issue has been patched via commit 2f68e16.
Severity
9 (Critical)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 23:26 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
inducer relate Affected: < 2f68e16cd3b96d25c188c1aa3f7e13cdb15cdaeb
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41516 (GCVE-0-2026-41516)

Vulnerability from cvelistv5 – Published: 2026-07-06 19:27 – Updated: 2026-07-06 19:47
VLAI
Title
OP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle
Summary
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.5.0 and prior to version 4.11.0, the RSA PKCS#1 v1.5 decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Bleichenbacher-style padding oracle that allows an attacker to recover RSA PKCS#1 v1.5 plaintext. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.
Severity
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 19:47 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
OP-TEE optee_os Affected: >= 4.5.0, < 4.11.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41515 (GCVE-0-2026-41515)

Vulnerability from cvelistv5 – Published: 2026-07-06 19:25 – Updated: 2026-07-07 14:09
VLAI
Title
OP-TEE: RSA-OAEP padding oracle in NXP CAAM driver enables plaintext recovery
Summary
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 3.9.0 and prior to version 4.11.0, the RSA-OAEP decryption implementation in the NXP CAAM crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Manger-style padding oracle that allows an attacker to recover RSA-OAEP plaintext with approximately 1000-2000 adaptive chosen ciphertext queries. Version 4.11.0 contains a patch. As a workaround, disable the NXP CAAM RSA driver with `CFG_CRYPTO_DRV_RSA=n`.
Severity
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-07 14:09 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
OP-TEE optee_os Affected: >= 3.9.0, < 4.11.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41514 (GCVE-0-2026-41514)

Vulnerability from cvelistv5 – Published: 2026-07-06 19:06 – Updated: 2026-07-07 16:57
VLAI
Title
OP-TEE: RSA-OAEP padding oracle in Hisilicon HPRE driver enables plaintext recovery
Summary
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.5.0 and prior to version 4.11.0, the RSA-OAEP decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Manger-style padding oracle that allows an attacker to recover RSA-OAEP plaintext with approximately 1000-2000 adaptive chosen ciphertext queries. Only affects plat-d06 with `CFG_HISILICON_ACC_V3=y`, which seems to be disabled by default. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.
Severity
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-07 16:45 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
OP-TEE optee_os Affected: >= 4.5.0, < 4.11.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41418 (GCVE-0-2026-41418)

Vulnerability from cvelistv5 – Published: 2026-04-24 18:49 – Updated: 2026-04-24 19:59
VLAI
Title
4ga Boards: User Enumeration via Timing Side-Channel in Authentication Endpoint
Summary
4ga Boards is a boards system for realtime project management. Prior to 3.3.5, 4ga Boards is vulnerable to user enumeration via a timing side-channel in the login endpoint (POST /api/access-tokens). When an invalid username/email is provided, the server responds immediately (~17ms average). When a valid username/email is provided with an incorrect password, the server first performs a bcrypt.compareSync() operation (~74ms average) before responding. This ~4.4× timing difference is trivially detectable even over a network — a single request suffices. This vulnerability is fixed in 3.3.5.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-24 19:59 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
RARgames 4gaBoards Affected: < 3.3.5
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Show details on NVD website
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CVE-2026-41407 (GCVE-0-2026-41407)

Vulnerability from cvelistv5 – Published: 2026-04-28 18:10 – Updated: 2026-04-30 12:53 X_Open Source
VLAI
Title
OpenClaw < 2026.4.2 - Timing Side Channel in Shared-Secret Comparison
Summary
OpenClaw before 2026.4.2 contains a timing side channel vulnerability in shared-secret comparison call sites that use early length-mismatch checks instead of fixed-length comparison helpers. Attackers can measure timing differences to leak secret-length information, weakening constant-time handling for shared secrets.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-30 12:53 UTC
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
OpenClaw OpenClaw Affected: 0 , < 2026.4.2 (semver)
Unaffected: 2026.4.2 (semver)
    cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-04-02 00:00
Credits
KEXNA (@kexinoh)
Show details on NVD website
To clipboard 

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No mitigation information available for this CWE.

CAPEC-462: Cross-Domain Search Timing

An attacker initiates cross domain HTTP / GET requests and times the server responses. The timing of these responses may leak important information on what is happening on the server. Browser's same origin policy prevents the attacker from directly reading the server responses (in the absence of any other weaknesses), but does not prevent the attacker from timing the responses to requests that the attacker issued cross domain.

CAPEC-541: Application Fingerprinting

An adversary engages in fingerprinting activities to determine the type or version of an application installed on a remote target.

CAPEC-580: System Footprinting

An adversary engages in active probing and exploration activities to determine security information about a remote target system. Often times adversaries will rely on remote applications that can be probed for system configurations.

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