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CVE-2023-34366

24
FAUCET Score

CVE-2023-34366 is a high-severity use-after-free vulnerability affecting Ichitaro 2023 1.0.1.59372, specifically within its Figure stream parsing. An attacker could achieve arbitrary code execution by tricking a victim into opening a specially crafted document, leading to memory corruption. With a CVSS score of 7.8, this vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L) and no authentication (PR:N), allowing for high impact across confidentiality, integrity, and availability (C:H/I:H/A:H). Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:justsystems:easy_postcard_max:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro_2021:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro_2022:-:*:*:*:*:*:*:*
1.0.1.59372CPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro_2023:1.0.1.59372:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:justsystems:ichitaro_government_10:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
47.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0064 is in the 45th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2023-1758
jvn.jp / en/jp/JVN28846531/index.html
Third Party Advisory
talosintelligence.com / vulnerability_reports/TALOS-2023-1758
ExploitThird Party Advisory