CWE-391Base

Unchecked Error Condition

Incomplete in the CWE catalog · 25 CVEs mapped

25
CVEs mapped
6.1
Median CVSS
What it is

[PLANNED FOR DEPRECATION. SEE MAINTENANCE NOTES AND CONSIDER CWE-252, CWE-248, OR CWE-1069.] Ignoring exceptions and other error conditions may allow an attacker to induce unexpected behavior unnoticed.

Recent examples
9.8cvss
CVE-2026-74900

CVE-2026-74900 - CRITICAL Severity Vulnerability

openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures silently fall back to simulation mode, generating a deterministic shared secret from only 16 bytes of the private key and publicly available encapsulated key data. Attackers who obtain 16 bytes of the private key can compute the shared secret and decrypt all ciphertext, as the fallback triggers on any KEM failure without raising an error.

CRITICALno explanation yet
0%
epss
9.3cvss
CVE-2025-71325

picklescan - Detection Bypass via STACK_GLOBAL Opcode Parsing Logic Flaw

picklescan before 0.0.27 contains a parsing logic error in the _list_globals function when handling STACK_GLOBAL opcodes, failing to track arguments in the correct range and allowing malicious pickle files to bypass detection. Attackers can craft pickle files with arguments at position zero to trigger unexpected exceptions and evade security scanning.

CRITICALno explanation yet
0%
epss
9.8cvss
CVE-2024-52316

Apache Tomcat: Authentication bypass when using Jakarta Authentication API

🚨 A configuration quirk in Apache Tomcat could let users waltz right past authentication, all because of an unchecked error condition! 🔥 Think of it like a hotel where a guest checks in but the front desk clerk forgets to ask for identification. In this case, the system fails to indicate a failed authentication attempt, so anyone can stroll right in without proper clearance! An attacker could potentially bypass authentication entirely, granting access to sensitive applications or data, which could be absolutely devastating for your system's security! Imagine unauthorized users mingling in your private space, wreaking havoc without any signs of their entry!

CRITICAL
6%
epss
The record
Technical detail
CWE ID
CWE-391
Abstraction
Base
Structure
Simple
Status
Incomplete
References (1)