CVE-2020-10703Public exploitNetwork attack vector

Daemon crash via null-unsafe storage path comparison

Published Jun 2, 2020 · Updated Aug 4, 2024

NULL pointer dereference in libvirt 3.10.0 through 5.10.0 allows remote authenticated users to crash libvirtd over a read-only connection. storagePoolLookupByTargetPathCallback compares a requested path with a network pool's absent target path using the non-null-safe STREQ macro, which reaches strcmp with a NULL argument. Exploitation requires an active storage pool without a target path, such as a Gluster or RBD pool, and interrupts the daemon for other clients.

CVSS severity6.5
Medium
EPSS probability2.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in libvirt 3.10.0 through 5.10.0 allows remote authenticated users to crash libvirtd over a read-only connection. storagePoolLookupByTargetPathCallback compares a requested path with a network pool's absent target path using the non-null-safe STREQ macro, which reaches strcmp with a NULL argument. Exploitation requires an active storage pool without a target path, such as a Gluster or RBD pool, and interrupts the daemon for other clients.

The record

CVE
CVE-2020-10703
Published
Jun 2, 2020
Updated
Aug 4, 2024
Vendor
libvirt
Product
libvirt
Classifications
CWE-476, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 2, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 3.10.0, < 6.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

libvirt · libvirtversion=>= 3.10.0, < 6.0.0

Published CVSS scores

6.5Red Hat, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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