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CVE-2026-46014VulnerabilityPublished Updated

Microsoft · KVM: SVM: Add missing save/restore handling of LBR MSRs

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-46014· Medium

Not known to be exploited · fixed in bca0597272f9712b1f8ebd38b184db1dc2902ff7 : update Microsoft when convenient.

Data as of 30 Oct 2026, 11:52 UTC

Severity
Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in bca0597272f9712b1f8ebd38b184db1dc2902ff7, 4428a0a8643b0acf4ed7b8ea3e5975023bf4aafb, 3700f0788da6acf73b2df56690f4b201aa4aefd2 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 24e09cbf480a72f9c952af4ca77b159503dca44b, < bca0597272f9712b1f8ebd38b184db1dc2902ff7
Fixed in
  • bca0597272f9712b1f8ebd38b184db1dc2902ff7
LinuxLinuxAffected
  • ≥ 24e09cbf480a72f9c952af4ca77b159503dca44b, < 4428a0a8643b0acf4ed7b8ea3e5975023bf4aafb
Fixed in
  • 4428a0a8643b0acf4ed7b8ea3e5975023bf4aafb
LinuxLinuxAffected
  • ≥ 24e09cbf480a72f9c952af4ca77b159503dca44b, < 3700f0788da6acf73b2df56690f4b201aa4aefd2
Fixed in
  • 3700f0788da6acf73b2df56690f4b201aa4aefd2
LinuxLinuxAffected
  • ≥ 24e09cbf480a72f9c952af4ca77b159503dca44b, < 13a89ada5dcfc2539514c83ba5a2c61157f1ec6c
Fixed in
  • 13a89ada5dcfc2539514c83ba5a2c61157f1ec6c
LinuxLinuxAffected
  • ≥ 24e09cbf480a72f9c952af4ca77b159503dca44b, < 2b922a42b531a82d7881add14a7698dcdc5e1f0a
Fixed in
  • 2b922a42b531a82d7881add14a7698dcdc5e1f0a
LinuxLinuxAffected
  • =2.6.26
Fixed in–

Description

CVE-2026-46014 is a vulnerability related to KVM's SVM implementation where there is missing save and restore handling of LBR MSRs. The information provided is minimal and does not include technical details beyond this. No known exploits are reported in the wild.

References

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