CVE-2026-1301 describes a heap-based buffer overflow vulnerability in systems with PubSub and JSON enabled, where a specially crafted JSON message can lead to a denial of service and memory corruption. The vulnerability has a CVSS score of 6.8 (Medium), indicating a moderate risk, and can be triggered remotely with low attack complexity, requiring low privileges and no user interaction. While the vulnerability can reliably crash the process, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| O6 Automation GmbH | Open62541 | >= 1.5-rc1, < 1.5-rc2CNA affecteddefault unaffected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.