CVE-2026-15813CWE-787

CVE-2026-15813

Medium · published July 20, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
28.5
In the wild
Unconfirmed
What it is

A vulnerability was found in the network packet de-fragmentation engine of kronosnet (Version affected <= 1.34). The internal reassembly code does not properly validate sequence numbers of incoming payload fragments. An attacker can exploit this lack of verification by transmitting malformed packets with corrupted sequence parameters. Under specific conditions, this forces the packet processing layer to parse data outside the designated bounds of the internal memory structures, causing an out-of-bounds memory access or heap corruption. This behavior can result in sudden application crashes or system instability.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00359 · 28.5th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-07-20T16:17Z
References (2)
EPSS history
Timeline
  • 20 JUL 10:36Z
    Kronosnet: kronosnet: memory corruption and out-of-bounds access via malformed network packet defragmentation
    cvelistv5