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CVE-2022-40303

HIGH

7.5

CVSS Score

Published: November 22, 2022 at 12:00 AM UTC

Updated: October 14, 2026 at 06:17 PM UTC

18 products affected across 4 vendorsmacOSiPhone OSiPadOS· also runs on 5 platforms

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Severity

HIGH7.5

Exploit prediction

EPSS 41%

SSVC

No known exploit

Description

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS · Apple

95%

All versionsv < 15.7.2

Affected range stops below 15.7.2, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

All versionsv < 15.7.2

Affected range stops below 15.7.2, so it looks safe — our inference, not a vendor statement

95%

All versions11.0 ≤ v < 11.7.212.0 ≤ v < 12.6.2

Affected range stops below 11.7.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.6.2, so it looks safe — our inference, not a vendor statement

95%

All versionsv < 16.2

Affected range stops below 16.2, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

All versionsv < 9.2

Affected range stops below 9.2, so it looks safe — our inference, not a vendor statement

Active IQ Unified Manager · NetAppnpm

95%

All versions

Clustered Data ONTAP · NetApp

95%

All versions

Clustered Data Ontap Antivirus Connector · NetApp

95%

All versions

H300S Firmware · NetAppdrupal

95%

All versions

netapp-h300s (same device)

H410C Firmware · NetAppdrupal

95%

All versions

netapp-h410c (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

H300S · NetApp

95%

H410C · NetApp

95%

H410S · NetApp

95%

H500S · NetApp

95%

H700S · NetApp

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0

References (19)

Mailing ListThird Party Advisory

Source: [email protected]

http://seclists.org/fulldisclosure/2022/Dec/21

Mailing ListThird Party Advisory

Source: [email protected]

http://seclists.org/fulldisclosure/2022/Dec/24

Mailing ListThird Party Advisory

Source: [email protected]

http://seclists.org/fulldisclosure/2022/Dec/25

Mailing ListThird Party Advisory

Source: [email protected]

http://seclists.org/fulldisclosure/2022/Dec/26

Mailing List

Source: [email protected]

http://seclists.org/fulldisclosure/2022/Dec/27

PatchThird Party Advisory

Source: [email protected]

https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0

Release NotesThird Party Advisory

Source: [email protected]

https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3

Third Party Advisory

Source: [email protected]

https://security.netapp.com/advisory/ntap-20221209-0003/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-190

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