CVE-2026-41445 | mborgerding kissfft kiss_fftndr.c kiss_fftndr_alloc integer overflow

VDB-358336 · CVE-2026-41445 · EUVD-2026-23905 MBORGERDING KISSFFT KISS_FFTNDR.C KISS_FFTNDR_ALLOC INTEGER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.4 $0-$5k 4.42 Summaryinfo A vulnerability was found in mborgerding kissfft. It has been declared as critical. Affected by this vulnerability is the function kiss_fftndr_alloc of the file kiss_fftndr.c. Executing a manipulation can lead to integer overflow. This vulnerability is handled as CVE-2026-41445. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue. Detailsinfo A vulnerability classified as critical was found in mborgerding kissfft (version now known). This vulnerability affects the function kiss_fftndr_alloc of the file kiss_fftndr.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: KissFFT before commit 8a8e66e contains an integer overflow vulnerability in the kiss_fftndr_alloc() function in kiss_fftndr.c where the allocation size calculation dimOther*(dimReal+2)*sizeof(kiss_fft_scalar) overflows signed 32-bit integer arithmetic before being widened to size_t, causing malloc() to allocate an undersized buffer. Attackers can trigger heap buffer overflow by providing crafted dimensions that cause the multiplication to exceed INT_MAX, allowing writes beyond the allocated buffer region when kiss_fftndr() processes the data. The weakness was released by Sajeeb Lohani as 8a8e66e33d692bad1376fe7904d87d767730537f. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-41445 since 04/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. Applying the patch 8a8e66e33d692bad1376fe7904d87d767730537f is able to eliminate this problem. The bugfix is ready for download at github.com. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-23905). Productinfo Vendor mborgerding Name kissfft License open-source Website Product: https://github.com/mborgerding/kissfft/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.6 VulDB Meta Temp Score: 7.4 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.8 CNA Vector (VulnCheck): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Integer overflow CWE: CWE-190 / CWE-189 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Patch Status: 🔍 0-Day Time: 🔒 Patch: 8a8e66e33d692bad1376fe7904d87d767730537f Timelineinfo 04/20/2026 Advisory disclosed 04/20/2026 +0 days CVE reserved 04/20/2026 +0 days VulDB entry created 04/20/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: 8a8e66e33d692bad1376fe7904d87d767730537f Researcher: Sajeeb Lohani Status: Confirmed CVE: CVE-2026-41445 (🔒) GCVE (CVE): GCVE-0-2026-41445 GCVE (VulDB): GCVE-100-358336 EUVD: 🔒 Entryinfo Created: 04/20/2026 19:57 Updated: 04/20/2026 23:33 Changes: 04/20/2026 19:57 (78), 04/20/2026 23:33 (1) Complete: 🔍 Cache ID: 99:A0A:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸