How severe is CVE-2023-39743?

CVE-2023-39743 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-39743 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-2023-39743?

CVE-2023-39743 affects Pete4abw Lzma Software Development Kit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39743?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-39743 published?

CVE-2023-39743 was published on 2023-08-17 and last updated on 2026-06-17.

CVE-2023-39743

CVE-2023-39743 is a medium-severity vulnerability in Pete4abw Lzma Software Development Kit with a CVSS 3.x base score of 5.3. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Pete4abw Lzma Software Development Kit
Published: 2023-08-17
Last modified: 2026-06-17

Description

lrzip-next LZMA v23.01 was discovered to contain an access violation via the component /bz3_decode_block src/libbz3.c.

Frequently asked questions

What is CVE-2023-39743?: lrzip-next LZMA v23.01 was discovered to contain an access violation via the component /bz3_decode_block src/libbz3.c.
How severe is CVE-2023-39743?: CVE-2023-39743 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-39743 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-2023-39743?: CVE-2023-39743 affects Pete4abw Lzma Software Development Kit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39743?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-39743 published?: CVE-2023-39743 was published on 2023-08-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pete4abw:lzma_software_development_kit:23.01:*:*:*:*:*:*:*

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