CVE-2026-44215: NanaZip: Heap out-of-bounds write in NanaZip UFS directory parser
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS filesystem image. The attacker controls the byte offset of the write within a ~254-byte window past the heap allocation boundary. This vulnerability is fixed in 6.0.1698.0.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-44215?
CVE-2026-44215 is classified as a high-severity vulnerability due to the potential for heap out-of-bounds writes.
How do I fix CVE-2026-44215?
To fix CVE-2026-44215, update NanaZip to version 6.0.1698.0 or later.
What versions of NanaZip are affected by CVE-2026-44215?
NanaZip versions from 5.0.1252.0 to before 6.0.1698.0 are affected by CVE-2026-44215.
What type of vulnerability is CVE-2026-44215?
CVE-2026-44215 is a heap out-of-bounds write vulnerability found in the UFS directory parser of NanaZip.
What can occur if CVE-2026-44215 is exploited?
Exploitation of CVE-2026-44215 could lead to severe data corruption or application crashes when processing specially crafted UFS filesystem images.