Weakness (CWE)
CWE-252: Unchecked Return Value
The product does not check the return value from a method or function.
How to prevent it (4 mitigations)
-
Implementation
Check the results of all functions that return a value and verify that the value is expected.
-
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
-
Implementation
Ensure that you account for all possible return values from the function.
-
Implementation
When designing a function, make sure you return a value or throw an exception in case of an error.
Source: MITRE CWE-252
5 results · Clear filters · Feed
-
Critical 9.2
Out-of-Bounds Write in Google Brotli Decoder
A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause …
KEV Oct 27, 2026 -
High 7.9CVE-2026-85649 Public exploit
(Holloway) Chew, Kean Ho's Actualizer v1.2.0 and earlier contains a fail-open password validation vulnerability in the …
-
Low 3.7CVE-2026-26080 Public exploit
HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. HAPr…
-
High 8.1CVE-2020-17533 Public exploit
Apache Accumulo Improper Handling of Insufficient Permissions
Apache Accumulo versions 1.5.0 through 1.10.0 and version 2.0.0 do not properly check the return value of some policy enforcement functions before permitting an authenticated user to perform certain administrative operations. Specifically, the return values o…
-
Critical 9.8
Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows remote attackers to execute ar…