Dissecting a complex vulnerability and achieving arbitrary code execution in Ichitaro Word
Summary: Cisco Talos researchers spent a year reverse-engineering JustSystems' Ichitaro word processor, which holds a large market share in Japan, and uncovered multiple high-severity vulnerabilities including TALOS-2023-1825 (CVE-2023-35126), which JustSystems patched in security update 2023.10.19. Talos scored the flaw 7.8 on CVSS 3.1 for arbitrary code execution, while JP CERT assigned it 3.3 after concluding code execution was not possible.
What's compelling: The gap between Talos's 7.8 and JP CERT's 3.3 on the same vulnerability means users who trust the lower score may skip the security update entirely, and Talos's exploit demonstration is what closes that gap.
Read the original at Cisco Talos ↗
- Topics
- Vulnerabilities & Patching
- Mentions
- CVE-2023-35126
- Related
- Attackers Exploit UnrealIRCd Flaw That Enables Server-Level Command Injection Cyber Risks · Nov 14, 2026U.S. CISA adds Check Point and UnrealIRCd flaws to its Known Exploited Vulnerabilities catalog Cyber Risks · Nov 14, 2026PostgreSQL Patches 52 Flaws, Including 22-Year-Old Bug Enabling Authenticated RCE Cyber Risks · Nov 13, 2026