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Fencer Vulns
high 7.8

CVE-2023-43896 json

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

published 2023-10-10 3 y ago modified 2026-07-09 4 mo ago also EUVD-2023-48256

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • northwave-cybersecurity.com https://northwave-cybersecurity.com/vulnerability-notice/macrium-reflect-driver-out-of-bounds-write referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.