Medium severity · published Jul 21, 2026
CVE-2026-15812
Kronosnet: kronosnet: access control list bypass via link id spoofing on unencrypted dynamic links
4.8
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability was found in the internal Access Control List (ACL) subsystem of kronosnet (Version affected: <= 1.34). When the framework is explicitly configured to manage dynamic links (accepting network traffic from any IP address) without network payload encryption, the validation architecture implicitly trusts the link ID provided within incoming data packets. A remote, unauthenticated attacker can exploit this lack of validation by spoofing a legitimate link ID inside crafted network frames. This allows the attacker to fully bypass the ACL framework and inject arbitrary data packets into the application layer, potentially leading to data corruption or service instabilities.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor
Affected product
RH
Red Hat Enterprise Linux 10
Red Hat
More from Red Hat Enterprise Linux 10
7.8
CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing
7.8
CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place
7.5
CVE-2026-34486
Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
10.0
CVE-2026-46595
Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh
10.0
CVE-2026-34078
Flatpak has a complete sandbox escape leading to host file access and code execution in the host context