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CVE-2026-63362

o6 Automation open62541 Integer Underflow

An unsigned integer underflow in the PubSub signature verification path in open62541 may allow a remote attacker to cause a denial of service via a crafted UDP packet.

CVSS 4.0 · 8.2 High EPSS 1.8% KEV · Not listed
Vendors
O6 Automation
Products
Open62541
CVE-2026-63559

o6 Automation open62541 Integer Overflow or Wraparound

An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to read out-of-bounds heap memory, potentially disclosing sensitive information.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
O6 Automation
Products
Open62541
CVE-2026-63035

o6 Automation open62541 Use After Free

A heap use-after-free vulnerability in the TransferSubscriptions service in open62541 may allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code.

CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
O6 Automation
Products
Open62541
CVE-2026-65423

o6 Automation open62541 Integer Overflow or Wraparound

An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to trigger an out-of-bounds write.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
O6 Automation
Products
Open62541