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CVE-2016-9379
The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to…
High7.9EPSS 0.44%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.9 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.44% · top 62% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.9.
Weakness
Affected products
n/a
- affected n/a
References (6)
- http://xenbits.xen.org/xsa/xsa198.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
- 94473 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- GLSA-201612-56 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- http://xenbits.xen.org/xsa/advisory-198.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1037347 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://support.citrix.com/article/CTX218775 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .