CVE-2022-26373 medium CVSS 5.5

Vulnerability in Intel Xeon Platinum 8253 Firmware (CVE-2022-26373)

Summary

Vulnerability in Intel Xeon Platinum 8253 Firmware (CVE-2022-26373). Confidential information can be exposed externally.

Original description

The description as published by the source.

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2022-26373 has been found in Intel Xeon Platinum 8253 Firmware.
Confidential information can be exposed externally. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Intel Xeon Platinum 8253 Firmware CVE-2022-26373" on the vendor's site.

CVE-2022-26373 (Intel Xeon Platinum 8253 Firmware) — CVSS v3 5.5
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Intel Xeon Platinum 8253 Firmware.

📍 Affected scope

Check the vendor advisory for the affected versions of Intel Xeon Platinum 8253 Firmware.

🔥 Severity

Severity: Medium (CVSS 5.5/10). Confidential information can be exposed externally.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで Intel Xeon Platinum 8253 Firmware を使っているサービスとバージョンを洗い出す。
2
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-26373 linux Fixed in: 5.10.136-1
Ubuntu UBUNTU-CVE-2022-26373 linux-aws Fixed in: 4.4.0-1120.126

Summary

Original description

Auto-generated summary

Response actions

Fix status by distribution

References