High severity · published Oct 29, 2026
CVE-2026-115793
Resource exhaustion from RPC sessions kept for requests to unknown interface
New
8.7
CVSS
–
EPSS
No
On KEV
Description
P-Net before 1.0.3 does not release the RPC session allocated for an RPC request that names an unknown interface or object UUID, and does not start a timeout for it. Repeated requests with different activity UUIDs exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Endpoint Mapper Lookup and Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PN
P-Net · RT-Labs
before 1.0.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-115793
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115793
rt-labs.com
https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf
More from P-Net
9.8
CVE-2025-32404
An Out-of-bounds Write in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to corrupt the memory of IO devices that use the library by sending a malicious RPC packet
9.8
CVE-2025-32403
An Out-of-bounds Write in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to corrupt the memory of IO devices that use the library by sending a malicious RPC packet
9.8
CVE-2025-32401
An Heap-based Buffer Overflow in RT-Labs P-Net version 1.0.1 or earlier allows an attacker to corrupt the memory of IO devices that use the library by sending a malicious RPC…
9.3
CVE-2026-111732
Out-of-bounds write when parsing AR Vendor Block requests
8.7
CVE-2026-111736
NULL pointer dereference on implicit read of user specific record index