CWE-228

Improper Handling of Syntactically Invalid Structure

6 CVEs Avg CVSS 6.1 MITRE
0
CRITICAL
3
HIGH
2
MEDIUM
1
LOW
0
POC
0
KEV

Monthly

CVE-2026-20125 HIGH This Week

HTTP Server input validation failures in Cisco IOS and IOS XE Release 3E enable authenticated remote attackers to trigger device reloads via malformed requests, causing denial of service. An attacker with valid credentials can exploit improper input handling to exhaust watchdog timers and force unexpected system restarts. No patch is currently available for this vulnerability affecting Cisco and Apple products.

Denial Of Service Apple Cisco
NVD VulDB
CVSS 3.1
7.7
EPSS
0.1%
CVE-2025-47736 LOW Monitor

dialect/mod.rs in the libsql-sqlite3-parser crate through 0.13.0 before 14f422a for Rust can crash if the input is not valid UTF-8. Rated low severity (CVSS 2.9), this vulnerability is no authentication required. No vendor patch available.

Denial Of Service
NVD GitHub
CVSS 3.1
2.9
EPSS
0.1%
CVE-2024-55594 MEDIUM This Month

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least vesrions 7.4.0 through 7.4.6 and 7.2.0 through 7.2.10 and 7.0.0 through 7.0.10 allows attacker to execute. Rated medium severity (CVSS 5.6), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Authentication Bypass Fortinet Fortiweb
NVD
CVSS 3.1
5.6
EPSS
0.1%
CVE-2023-42784 MEDIUM This Month

FortiWeb, a web application firewall made by Fortinet, has a flaw where it doesn't properly validate certain malformed HTTP requests, allowing attackers to execute unauthorized code or commands on affected systems. The vulnerability impacts multiple versions of FortiWeb (7.0.0-7.0.10, 7.2.0-7.2.10, and 7.4.0-7.4.6). An attacker could exploit this by sending specially crafted requests to gain control of the system and run arbitrary commands.

Fortinet
NVD
CVSS 3.1
5.6
EPSS
0.1%
CVE-2025-0343 HIGH This Month

Swift ASN.1 can be caused to crash when parsing certain BER/DER constructions. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service
NVD GitHub
CVSS 3.1
7.5
EPSS
0.2%
CVE-2024-21612 HIGH This Month

An Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Juniper Junos Os Evolved
NVD
CVSS 3.1
7.5
EPSS
0.2%
CVE-2026-20125
EPSS 0% CVSS 7.7
HIGH This Week

HTTP Server input validation failures in Cisco IOS and IOS XE Release 3E enable authenticated remote attackers to trigger device reloads via malformed requests, causing denial of service. An attacker with valid credentials can exploit improper input handling to exhaust watchdog timers and force unexpected system restarts. No patch is currently available for this vulnerability affecting Cisco and Apple products.

Denial Of Service Apple Cisco
NVD VulDB
CVE-2025-47736
EPSS 0% CVSS 2.9
LOW Monitor

dialect/mod.rs in the libsql-sqlite3-parser crate through 0.13.0 before 14f422a for Rust can crash if the input is not valid UTF-8. Rated low severity (CVSS 2.9), this vulnerability is no authentication required. No vendor patch available.

Denial Of Service
NVD GitHub
CVE-2024-55594
EPSS 0% CVSS 5.6
MEDIUM This Month

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least vesrions 7.4.0 through 7.4.6 and 7.2.0 through 7.2.10 and 7.0.0 through 7.0.10 allows attacker to execute. Rated medium severity (CVSS 5.6), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Authentication Bypass Fortinet Fortiweb
NVD
CVE-2023-42784
EPSS 0% CVSS 5.6
MEDIUM This Month

FortiWeb, a web application firewall made by Fortinet, has a flaw where it doesn't properly validate certain malformed HTTP requests, allowing attackers to execute unauthorized code or commands on affected systems. The vulnerability impacts multiple versions of FortiWeb (7.0.0-7.0.10, 7.2.0-7.2.10, and 7.4.0-7.4.6). An attacker could exploit this by sending specially crafted requests to gain control of the system and run arbitrary commands.

Fortinet
NVD
CVE-2025-0343
EPSS 0% CVSS 7.5
HIGH This Month

Swift ASN.1 can be caused to crash when parsing certain BER/DER constructions. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service
NVD GitHub
CVE-2024-21612
EPSS 0% CVSS 7.5
HIGH This Month

An Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Juniper Junos Os Evolved
NVD

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