CVE-2022-37434

zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

19% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-25)

CWEs

CWE-787, CWE-120

Published

2022-08-05

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• apple:ipados
• apple:iphone_os
• apple:macos
• apple:watchos
• debian:debian_linux
• fedoraproject:fedora
• netapp:active_iq_unified_manager
• netapp:h300s_firmware
• netapp:h500s_firmware
• netapp:h700s_firmware
• netapp:hci
• netapp:hci_compute_node
• netapp:management_services_for_element_software
• netapp:oncommand_workflow_automation
• netapp:ontap_select_deploy_administration_utility
• netapp:storagegrid
• stormshield:stormshield_network_security
• zlib:zlib

References

• http://seclists.org/fulldisclosure/2022/Oct/37
• http://seclists.org/fulldisclosure/2022/Oct/38
• http://seclists.org/fulldisclosure/2022/Oct/41
• http://seclists.org/fulldisclosure/2022/Oct/42
• http://www.openwall.com/lists/oss-security/2022/08/05/2

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