AUGUST 16, 2026
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Case File

CVE-2026-18938

MEDIUM · CVSS 6.2 EPSS 0.11% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-07 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

A local attacker or one with equivalent access to a reachable RPC channel can exploit an integer overflow vulnerability in p11-kit, leading to a heap out-of-bounds write and potential Denial of Service (DoS) on 32-bit systems. This flaw allows the attacker to send specially crafted messages that miscalculate memory allocation for nested attributes, ultimately crashing the p11-kit RPC parsing process. Organizations using p11-kit on 32-bit architectures should prioritize addressing this vulnerability to mitigate the risk of service disruption.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

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CVE
CVE-2026-18938
Severity
MEDIUM
CVSS
6.2
EPSS
0.11%

Original NVD Description

A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.