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NVD / CVE Program· CNA XEN

CVE-2025-58149: Incorrect removal of permissions on PCI device unplug

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.43% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: xen (Alpine:v3.19) 4.18.5-r3; xen (Alpine:v3.21) 4.19.3-r2; xen (Alpine:v3.22) 4.20.1-r2.

Low priority for now. Upgrade to xen (Alpine:v3.19) 4.18.5-r3; xen (Alpine:v3.21) 4.19.3-r2; xen (Alpine:v3.22) 4.20.1-r2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allows the domain itself to map the memory in the page-tables. For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Oct 31, 2025
Updated
Oct 19, 2026
EPSS
0.4% · 37th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-58149

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
xenxen

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • xen xen4.0.0 and later

Versions reported by the vendor

Affected version ranges reported by the assigning authority (XEN). Independent of NVD's CPE analysis and usually ahead of it.

  • Xen Xen

    • consult Xen advisory XSA-476unknown

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.19xenfrom 4.0.0 · before 4.18.5-r34.18.5-r3
Alpine:v3.21xenfrom 4.0.0 · before 4.19.3-r24.19.3-r2
Alpine:v3.22xenfrom 4.0.0 · before 4.20.1-r24.20.1-r2
Debian:12xenbefore 4.17.5+72-g01140da4e8-14.17.5+72-g01140da4e8-1
Debian:13xenbefore 4.20.2+7-g1badcf5035-0+deb13u14.20.2+7-g1badcf5035-0+deb13u1
Debian:14xenbefore 4.20.2+7-g1badcf5035-14.20.2+7-g1badcf5035-1
openSUSE:Leap 15.6xenbefore 4.18.5_08-150600.3.34.24.18.5_08-150600.3.34.2
openSUSE:Tumbleweedxenbefore 4.20.1_08-1.14.20.1_08-1.1
SUSE:Linux Enterprise Micro 5.2xenbefore 4.14.6_28-150300.3.94.14.14.6_28-150300.3.94.1
SUSE:Linux Enterprise Micro 5.3xenbefore 4.16.7_06-150400.4.78.14.16.7_06-150400.4.78.1
SUSE:Linux Enterprise Micro 5.5xenbefore 4.17.6_02-150500.3.56.14.17.6_02-150500.3.56.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6xenbefore 4.18.5_08-150600.3.34.24.18.5_08-150600.3.34.2
SUSE:Linux Enterprise Module for Basesystem 15 SP7xenbefore 4.20.2_02-150700.3.19.14.20.2_02-150700.3.19.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5xenbefore 4.12.4_64-3.137.14.12.4_64-3.137.1

Same product

xen: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-10921The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, whi
    41Plan
  • CVE-2017-10920The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host
    41Plan
  • CVE-2017-10918Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-58147Oct 31, 2025 · x86: Incorrect input sanitisation in Viridian hypercalls
    30Monitor
  • ← EarlierCVE-2025-58148Oct 31, 2025 · x86: Incorrect input sanitisation in Viridian hypercalls
    30Monitor
  • Later →CVE-2025-58150Jan 28, 2026 · x86: buffer overrun with shadow paging + tracing
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:xen4.18.5-r3 · Alpine:v3.19Package registry (OSV)
debian:xen4.17.5+72-g01140da4e8-1 · Debian:12Package registry (OSV)
opensuse:xen4.18.5_08-150600.3.34.2 · openSUSE:Leap 15.6Package registry (OSV)
suse:xen4.18.5_08-150600.3.34.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:xen4.20.2_02-150700.3.19.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

  • Jiqian ChenAMD and diagnosed as a security issue by Roger Pau Monné of AMD.finder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-672 · Operation on a Resource after Expiration or Release

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records