How severe is CVE-2023-43896?

CVE-2023-43896 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-43896 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43896?

CVE-2023-43896 affects Macrium Reflect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43896?

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-2023-43896 published?

CVE-2023-43896 was published on 2023-10-10 and last updated on 2026-07-05.

CVE-2023-43896

CVE-2023-43896 is a high-severity vulnerability in Macrium Reflect 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Macrium Reflect
Published: 2023-10-10
Last modified: 2026-07-05

Description

A buffer overflow in Macrium Reflect 8.1.7544 and below allows attackers to escalate privileges or execute arbitrary code.

Frequently asked questions

What is CVE-2023-43896?: A buffer overflow in Macrium Reflect 8.1.7544 and below allows attackers to escalate privileges or execute arbitrary code.
How severe is CVE-2023-43896?: CVE-2023-43896 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-43896 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43896?: CVE-2023-43896 affects Macrium Reflect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43896?: 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-2023-43896 published?: CVE-2023-43896 was published on 2023-10-10 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:macrium:reflect:8.1.7544:*:*:*:*:*:*:*

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