An out-of-bounds write vulnerability exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372.
An out-of-bounds write vulnerability exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372. A specially crafted document can cause a type confusion, which can lead to memory corruption and eventually arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
- Published
- Oct 19, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.7% · 51th percentile
- CWE
- CWE-843
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.7%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.8
- CNA · talos
- 7.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| justsystems | easy postcard max | cpe:2.3:a:justsystems:easy_postcard_max |
| justsystems | ichitaro 2021 | cpe:2.3:a:justsystems:ichitaro_2021 |
| justsystems | ichitaro 2022 | cpe:2.3:a:justsystems:ichitaro_2022 |
| justsystems | ichitaro 2023 | cpe:2.3:a:justsystems:ichitaro_2023 |
| justsystems | ichitaro government 10 | cpe:2.3:a:justsystems:ichitaro_government_10 |
| justsystems | ichitaro government 8 | cpe:2.3:a:justsystems:ichitaro_government_8 |
| justsystems | ichitaro government 9 | cpe:2.3:a:justsystems:ichitaro_government_9 |
| justsystems | ichitaro pro 3 | cpe:2.3:a:justsystems:ichitaro_pro_3 |
| justsystems | ichitaro pro 4 | cpe:2.3:a:justsystems:ichitaro_pro_4 |
| justsystems | ichitaro pro 5 | cpe:2.3:a:justsystems:ichitaro_pro_5 |
| justsystems | just government 3 | cpe:2.3:a:justsystems:just_government_3 |
| justsystems | just government 4 | cpe:2.3:a:justsystems:just_government_4 |
and 7 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- justsystems easy postcard maxall versions
- justsystems ichitaro 2021all versions
- justsystems ichitaro 2022all versions
- justsystems ichitaro 20231.0.1.59372
- justsystems ichitaro government 10all versions
- justsystems ichitaro government 8all versions
- justsystems ichitaro government 9all versions
- justsystems ichitaro pro 3all versions
- justsystems ichitaro pro 4all versions
- justsystems ichitaro pro 5all versions
- justsystems just government 3all versions
- justsystems just government 4all versions
- justsystems just government 5all versions
- justsystems just office 3all versions
- justsystems just office 4all versions
- justsystems just office 5all versions
- justsystems just police 3all versions
- justsystems just police 4all versions
- justsystems just police 5all versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (talos). Independent of NVD's CPE analysis and usually ahead of it.
Ichitaro 2023 Ichitaro 2023
- 1.0.1.59372affected
Same product
justsystems: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-38127An integer overflow exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372.31Monitor
- CVE-2023-34366A use-after-free vulnerability exists in the Figure stream parsing functionality of Ichitaro 2023 1.0.1.59372.31Monitor
- CVE-2023-35126An out-of-bounds write vulnerability exists within the parsers for both the "DocumentViewStyles" and "DocumentEditStyles" streams of Ichitar31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- a memberCisco Talos.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.