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Weakness · BaseCWE-358

CWE-358: Improperly Implemented Security Check for Standard

Base

As of 2026-10-24, CWE-358 (Improperly Implemented Security Check for Standard) underlies 3 CVEs tracked by Threadlinqs, none of them in the CISA Known Exploited Vulnerabilities catalog, and is cited by 6 tracked threats.

CVEs
3Mapped to CWE-358
CISA KEV
0None listed yet
Critical
0CVSS v3 critical CVEs
Threats
6Tracked campaigns citing it
Likelihood
—MITRE likelihood of exploit

Last updated:

What is CWE-358?

The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.

CWE-358 is a base-level weakness in MITRE’s Common Weakness Enumeration. Applicable platforms: Language: Not Language-Specific.

Source: MITRE CWE (CWE-358 definition, reproduced verbatim). Counts and linkage below are Threadlinqs data.

Consequences

  • Access Control — Bypass Protection Mechanism

Source: MITRE CWE, common consequences.

How CWE-358 is exploited in the wild

Threadlinqs maps 3 CVEs to CWE-358, published between 2024-04-30 and 2026-07-01. None of them is in the CISA KEV catalog yet. By CVSS v3 severity the set splits into 1 high, 1 medium. The highest EPSS score in the set is 0.6% (CVE-2024-2617), the modelled probability of exploitation in the next 30 days. 6 tracked threats reference CWE-358 directly or through a CVE it covers; the most recent is “Multiple Vulnerabilities in Fortigate NGFW on RUGGEDCOM APE1808 Devices (SSA-864900) — Including Actively Exploited FortiCloud SSO Bypass (CVE-2025-59718/-59719) and FortiOS Heap Overflow (CVE-2025-25249)” (2026-09-13). Affected products concentrate in Cloudflare (1), Fortinet (1), Hitachi Energy (1).

Vulnerabilities (CVEs)

All 3 CVEs mapped to CWE-358, CISA KEV first, then by CVSS score.

Affected vendors

  • Cloudflare — 1 CVE
  • Fortinet — 1 CVE
  • Hitachi Energy — 1 CVE

Threat activity

6 tracked threats cite CWE-358: