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KEV CVE-2026-58644: Microsoft SharePoint — Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

Source: CISA KEV
Original: https://nvd.nist.gov/vuln/detail/CVE-2026-58644
License (as archived): CC0-1.0
Archived: 2026-10-07T11:39:10.347Z
SHA-256 of the archived text: da3e3e8e605a66a4d23a3c6c435897441bfeba8443fb164abb37e3ce2d88efa0
Stable URL of this page: https://metraipolis.com/documento/dc_d351efee6bbd

How to cite

KEV CVE-2026-58644: Microsoft SharePoint — Microsoft SharePoint Deserialization of Untrusted Data Vulnerability — CISA KEV, https://nvd.nist.gov/vuln/detail/CVE-2026-58644 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_d351efee6bbd (Metraipolis archive dc_d351efee6bbd, sha256 da3e3e8e605a66a4d23a3c6c435897441bfeba8443fb164abb37e3ce2d88efa0)

BibTeX

@misc{dcd351efee6bbd,
  title = {KEV CVE-2026-58644: Microsoft SharePoint — Microsoft SharePoint Deserialization of Untrusted Data Vulnerability},
  howpublished = {CISA KEV},
  url = {https://nvd.nist.gov/vuln/detail/CVE-2026-58644},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_d351efee6bbd; sha256 da3e3e8e605a66a4d23a3c6c435897441bfeba8443fb164abb37e3ce2d88efa0},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: CISA KEV, https://nvd.nist.gov/vuln/detail/CVE-2026-58644. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

CVE-2026-58644 è nel catalogo CISA delle vulnerabilità SFRUTTATE attivamente (Known Exploited Vulnerabilities), aggiunta il 2026-07-16.
Prodotto: Microsoft SharePoint — Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
Descrizione: Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.
Azione richiesta (agenzie federali USA): Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Scadenza: 2026-07-19.
Uso noto in campagne ransomware: Unknown
Debolezze: CWE-502
Note e riferimenti: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-58644

Fonte: catalogo CISA KEV (CC0 1.0), versione 2026.10.04, consultato il 2026-10-07: https://www.cisa.gov/known-exploited-vulnerabilities-catalog