How severe is CVE-2023-38128?

CVE-2023-38128 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-38128 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-38128?

CVE-2023-38128 primarily affects Justsystems Easy Postcard Max. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-38128?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-38128 published?

CVE-2023-38128 was published on 2023-10-19 and last updated on 2026-06-17.

CVE-2023-38128

CVE-2023-38128 is a high-severity vulnerability in Justsystems Easy Postcard Max with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Justsystems Easy Postcard Max
Published: 2023-10-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-38128?: 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.
How severe is CVE-2023-38128?: CVE-2023-38128 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-38128 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-38128?: CVE-2023-38128 primarily affects Justsystems Easy Postcard Max. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-38128?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-38128 published?: CVE-2023-38128 was published on 2023-10-19 and last updated on 2026-06-17.

References

Affected products (19)

cpe:2.3:a:justsystems:easy_postcard_max:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_2021:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_2022:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_2023:1.0.1.59372:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_government_10:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_government_8:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_government_9:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_pro_3:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_pro_4:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:ichitaro_pro_5:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_government_3:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_government_4:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_government_5:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_office_3:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_office_4:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_office_5:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_police_3:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_police_4:-:*:*:*:*:*:*:*
cpe:2.3:a:justsystems:just_police_5:-:*:*:*:*:*:*:*

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