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VulnerabilityPublished Updated

CVE-2024-28956: intel-microcode vulnerabilities

Affects intel-microcodeSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited · fixed in 3.20250512.0ubuntu0.16.04.1+esm1 : patch intel-microcode soon.

Data as of 3 Nov 2026, 18:14 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Patch
Available – fixed in 3.20250512.0ubuntu0.16.04.1+esm1, 3.20250512.0ubuntu0.18.04.1+esm1, 3.20250512.0ubuntu0.20.04.1 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 2025

  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 3 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 24.04 LTSintel-microcodepkg:deb/ubuntu/intel-microcode?arch=source&distro=nobleOther threatsAffected
  • <3.20250512.0ubuntu0.24.04.1
Fixed in
  • 3.20250512.0ubuntu0.24.04.1
Ubuntu 22.04 LTSintel-microcodepkg:deb/ubuntu/intel-microcode?arch=source&distro=jammyOther threatsAffected
  • <3.20250512.0ubuntu0.22.04.1
Fixed in
  • 3.20250512.0ubuntu0.22.04.1
Ubuntu 20.04 LTSintel-microcodepkg:deb/ubuntu/intel-microcode?arch=source&distro=focalOther threatsAffected
  • <3.20250512.0ubuntu0.20.04.1
Fixed in
  • 3.20250512.0ubuntu0.20.04.1
Ubuntu Pro 18.04 LTSintel-microcodepkg:deb/ubuntu/intel-microcode?arch=source&distro=esm-infra/bionicOther threatsAffected
  • <3.20250512.0ubuntu0.18.04.1+esm1
Fixed in
  • 3.20250512.0ubuntu0.18.04.1+esm1
Ubuntu Pro 16.04 LTSintel-microcodepkg:deb/ubuntu/intel-microcode?arch=source&distro=esm-infra/xenialOther threatsAffected
  • <3.20250512.0ubuntu0.16.04.1+esm1
Fixed in
  • 3.20250512.0ubuntu0.16.04.1+esm1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Apply the updated intel-microcode packages provided by Ubuntu for your specific release as listed in the advisory USN-7535-1. After installation, reboot the system to ensure the microcode updates are applied. These updates fix the vulnerabilities described. No additional mitigation steps are required beyond applying the official patches.

Description

Multiple vulnerabilities affecting Intel processors were discovered that involve improper handling of data in shared microarchitectural structures, prediction calculations, branch prediction unit initialization, and core management mechanisms. These issues could allow an authenticated attacker to obtain sensitive information or cause a denial of service. The vulnerabilities are addressed by updated Intel microcode packages available for various Ubuntu releases. A system reboot is required after applying updates to activate the fixes.

Reports on CVE-2024-28956

References

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