Is CVE-2025-65570 actively exploited?

No active exploitation of CVE-2025-65570 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-65570 be exploited remotely?

Yes. CVE-2025-65570 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-65570?

CVE-2025-65570 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2025-65570

CWE-843Published: December 29, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A type confusion in jsish 2.0 allows incorrect control flow during execution of the OP_NEXT opcode. When an “instanceof” expression uses an array element access as the left-hand operand inside a for-in loop, the instructions implementation leaves an additional array reference on the stack rather than consuming it during OP_INSTANCEOF. As a result, OP_NEXT interprets the array as an iterator object and reads the iterCmd function pointer from an invalid structure, potentially causing a crash or enabling code execution depending on heap layout.

NVD Source

Technical Analysis

CVE-2025-65570 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.