CVE-2020-15137: All versions of HoRNDIS are affected by an integer overflow in the RNDIS packet parsing routines

Routine

MEDIUM 5.5MITIGATE

CVE-2020-15137 is a medium-severity flaw (CVSS 5.5) affecting horndis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

All versions of HoRNDIS are affected by an integer overflow in the RNDIS packet parsing routines. A malicious USB device can trigger disclosure of unrelated kernel memory to userspace applications on the host, or can cause the kernel to crash. Kernel memory disclosure is especially likely on 32-bit kernels; 64-bit kernels are more likely to crash on attempted exploitation. It is not believed that kernel memory corruption is possible, or that unat

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Physical
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-190
Published	2020-08-12
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: horndis project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-08-12 17:15 UTCPublished CVE record published
2026-06-17 02:56 UTCUpdated Record last modified

horndis project horndis MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy horndis || rpm -q horndis || horndis --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-15137?

horndis: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-15137 being exploited?

CVE-2020-15137 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-15137 affect?

CVE-2020-15137 affects horndis. Severity is medium (CVSS 5.5). All versions of HoRNDIS are affected by an integer overflow in the RNDIS packet parsing routines. A malicious USB device can trigger disclosure of unrelated kernel memory to userspace applications on the host, or can cause the kernel to cra

How urgent is CVE-2020-15137?

Priority 24/100. No elevated risk signals yet.

References

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