Heap-based buffer overflow in Ichitaro
Priority HIGH 69CWE-122Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
A heap-based buffer overflow vulnerability exists in the way Ichitaro version 2022 1.0.1.57600 processes certain LayoutBox stream record types. A specially crafted document can cause a buffer overflow, leading to memory corruption, which can result in arbitrary code execution.To trigger this vulnerability, the victim would need to open a malicious, attacker-created document.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00537 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Ichitaro | Ichitaro | 2022 1.0.1.57600 | — | No fix listed | CNA |
- Ichitaro VendorIchitaro Affected 2022 1.0.1.57600 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:justsystems:ichitaro_2022:1.0.1.57600:*:*:*:*:*:*:* | 1.0.1.57600 | Vulnerable | Ichitaro 2023 |
- cpe:2.3:a:justsystems:ichitaro_2022:1.0.1.57600:*:*:*:*:*:*:* Versions 1.0.1.57600 Vulnerable ·Ichitaro 2023
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-22660
- 2026-10-03 Alias added: GHSA-22p7-2347-c784
References
More Ichitaro vulnerabilities
- TI-2023-08556 An invalid free vulnerability exists in the Frame stream parser functionality of Ichitaro… CVSS 3.1HIGH 7.8
- TI-2022-22197 Heap-based buffer overflow in Ichitaro CVSS 3.1HIGH 7.8
- TI-2022-21428 Use after free in Ichitaro CVSS 3.1HIGH 7.8
- TI-2009-01008 Unspecified vulnerability in JustSystems Ichitaro 13, 2004 through 2008, Lite2, and… CVSS 2.0HIGH 9.3
- TI-2007-01860 Ichitaro 2005 through 2007, and possibly related products, allows remote attackers to… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2023-22660 · CVE Program
- CVE-2023-22660 · NVD
- FIRST EPSS
- GHSA-22p7-2347-c784 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences