Is CVE-2026-42953 actively exploited?

No active exploitation of CVE-2026-42953 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42953 be exploited remotely?

No. CVE-2026-42953 requires local access to exploit.

What is the CVSS score of CVE-2026-42953?

CVE-2026-42953 has a CVSS score of 8.4 (HIGH).

HOME VULNERABILITIESCVE-2026-42953

HIGH

CVE-2026-42953

CWE-787Published: July 7, 2026· Updated: Jul 9, 2026

8.4

CVSS v3.1

EPSS:0.14%probability of exploitation in 30 daysPercentile:3.8th

Official Description

The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.

NVD Source

Technical Analysis

CVE-2026-42953 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (A) is needed, which slightly reduces the risk of mass automated attacks.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges Req.None

User InteractionA

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2026-42953

Labcenter Proteus 9

CISA Alerts· Jul 7, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could disclose information and allow a malicious user to execute arbitrary code on affected installations. The following versions of Labcenter Proteus 9 are affected: Proteus 9.1_SP4_Build_42914 CVSS Vendor Equipment Vulnerabilities v3 7.8 Labcenter Electronics Labcenter Proteus 9 Out-of-bounds Write, Stack-based Buffer Overflow, Use After Free Background Critical Infrastructure Sectors: Communications, Critical Manufacturing, Defense Industrial Base, Energy, Healthcare and Public Health, Transportation Systems, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: United Kingdom Vulnerabilities Expand All + CVE-2026-42953 The application contains an [xlite_meta score:79 src:CISA Alerts xlite_fp:f591e79767b0c1d849e394c098ae0d4d8ddaaece31af2c560c839a21512d7e9c]