🛡️ CVE-2026-15813 on Ubuntu — kronosnet

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

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.

Distribution advisory

This page covers CVE-2026-15813 as tracked by Ubuntu, for the package kronosnet. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability high.

Weakness class

UBUNTU-CVE-2026-15813 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

UBUNTU-CVE-2026-15813 is recorded against 1 package.

kronosnet

Timeline and source

Published on 20 July 2026 and last revised on 29 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
bugzilla.redhat.com (Report)
access.redhat.com (Report)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-20

Updated 2026-08-11

Modified 2026-07-29

Fix URL N/A

Affected Packages

Software	From version	Fixed in
kronosnet	—	—

References

REPORT https://ubuntu.com/security/CVE-2026-15813

REPORT https://www.cve.org/CVERecord?id=CVE-2026-15813

REPORT https://bugzilla.redhat.com/show_bug.cgi?id=2500854

REPORT https://access.redhat.com/security/cve/CVE-2026-15813

🔗 NVD 🔗 Mitre

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