CVE-2022-40304: An issue was discovered in libxml2 before 2.10.3

Q: How do I fix CVE-2022-40304?

libxml2: upgrade to 2.10.3; active iq unified manager: mitigate or apply the listed mitigation; clustered data ontap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2022-40304 being exploited?

CVE-2022-40304 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-40304 affect?

CVE-2022-40304 affects libxml2, active iq unified manager, clustered data ontap. Severity is high (CVSS 7.8). An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

Q: How urgent is CVE-2022-40304?

Priority 51/100. High severity; EPSS top 7%: very likely to be exploited

This month

HIGH 7.8UPGRADEMITIGATEMITIGATE

CVE-2022-40304 is a high-severity flaw (CVSS 7.8) affecting libxml2, active iq unified manager, clustered data ontap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

Why this priority

High severity
EPSS top 7%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Weakness	CWE-415
Published	2022-11-23
Last modified	2026-10-14

Publisher (CNA): MITRE · Vendor: netapp · xmlsoft

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-11-23 18:15 UTCPublished CVE record published
2026-10-14 18:17 UTCUpdated Record last modified

xmlsoft libxml2 UPGRADE

Affected: < 2.10.3

Fixed in: 2.10.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libxml2 || rpm -q libxml2 || libxml2 --version

2. UPGRADE to 2.10.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libxml2

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libxml2

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

netapp active iq unified manager 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 active-iq-unified-manager || rpm -q active-iq-unified-manager || active-iq-unified-manager --version

No fixed or unaffected release known

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

netapp clustered data ontap 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 clustered-data-ontap || rpm -q clustered-data-ontap || clustered-data-ontap --version

No fixed or unaffected release known

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

netapp clustered data ontap antivirus connector 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 clustered-data-ontap-antivirus-connector || rpm -q clustered-data-ontap-antivirus-connector || clustered-data-ontap-antivirus-connector --version

No fixed or unaffected release known

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

netapp manageability software development kit 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 manageability-software-development-kit || rpm -q manageability-software-development-kit || manageability-software-development-kit --version

No fixed or unaffected release known

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

netapp smi-s provider 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 smi-s-provider || rpm -q smi-s-provider || smi-s-provider --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-2022-40304?

libxml2: upgrade to 2.10.3; active iq unified manager: mitigate or apply the listed mitigation; clustered data ontap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-40304 being exploited?

CVE-2022-40304 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-2022-40304 affect?

CVE-2022-40304 affects libxml2, active iq unified manager, clustered data ontap. Severity is high (CVSS 7.8). An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

How urgent is CVE-2022-40304?

Priority 51/100. High severity; EPSS top 7%: very likely to be exploited

Software pages

libxml2 vulnerabilities

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References

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