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CVE-2026-102703VulnerabilityPublished

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to

Source GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-102703· High

Not known to be exploited.

Data as of 4 Nov 2026, 15:18 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Nov 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 4 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
XenXenAffected–Fixed in–

Description

This record describes two related vulnerabilities in the Xen hypervisor's grant copy operations. The vulnerabilities involve incorrect internal caching and validation of grant references and frame numbers during batch copy operations on adjacent memory ranges. Specifically, CVE-2026-102703 concerns mixing up frame numbers and grant references, while CVE-2026-102704 involves a misplaced check that allows copying by frame number beyond the caller's own memory.

References

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