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Critical 9.8Published Aug 5, 2022
CVE-2022-37434zlib 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.
Updated under an hour ago ()
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It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 31 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-120
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens RUGGEDCOM ROX MX5000 siemens:ruggedcom_rox_mx5000 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX MX5000RE siemens:ruggedcom_rox_mx5000re (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1400 siemens:ruggedcom_rox_rx1400 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1500 siemens:ruggedcom_rox_rx1500 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1501 siemens:ruggedcom_rox_rx1501 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1510 siemens:ruggedcom_rox_rx1510 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1511 siemens:ruggedcom_rox_rx1511 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1512 siemens:ruggedcom_rox_rx1512 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1524 siemens:ruggedcom_rox_rx1524 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX1536 siemens:ruggedcom_rox_rx1536 (from the name) | before V2.17.0 | CISA ADP |
Siemens RUGGEDCOM ROX RX5000 siemens:ruggedcom_rox_rx5000 (from the name) | before V2.17.0 | CISA ADP |
zlib zlib zlib:zlib | through 1.2.12 | NVD |
fedoraproject fedora fedoraproject:fedora | 35; 36; 37 | NVD |
debian debian_linux debian:debian_linux | 10.0 | NVD |
netapp active_iq_unified_manager netapp:active_iq_unified_manager | all versions; all versions | NVD |
netapp hci netapp:hci | all versions | NVD |
netapp management_services_for_element_software netapp:management_services_for_element_software | all versions | NVD |
netapp oncommand_workflow_automation netapp:oncommand_workflow_automation | all versions | NVD |
netapp ontap_select_deploy_administration_utility netapp:ontap_select_deploy_administration_utility | all versions | NVD |
netapp storagegrid netapp:storagegrid | all versions | NVD |
netapp hci_compute_node netapp:hci_compute_node | all versions | NVD |
netapp h300s_firmware netapp:h300s_firmware | all versions | NVD |
netapp h500s_firmware netapp:h500s_firmware | all versions | NVD |
netapp h700s_firmware netapp:h700s_firmware | all versions; all versions | NVD |
apple ipados apple:ipados | before 15.7.1 | NVD |
apple iphone_os apple:iphone_os | before 15.7.1; from 16.0 before 16.1 | NVD |
apple macos apple:macos | from 11.0 before 11.7.1; from 12.0.0 before 12.6.1 | NVD |
apple watchos apple:watchos | before 9.1 | NVD |
stormshield stormshield_network_security stormshield:stormshield_network_security | from 3.7.31 before 3.7.34; from 3.11.0 before 3.11.22; from 4.3.0 before 4.3.16; from 4.6.0 before 4.6.3 | NVD |
References
- https://github.com/ivd38/zlib_overflowexploit, third-party-advisory
- https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1patch, third-party-advisory
- https://github.com/madler/zlib/blob/21767c654d31d2dccdde4330529775c6c5fd5389/zlib.h#L1062-L1063exploit, third-party-advisory
- https://github.com/nodejs/node/blob/75b68c6e4db515f76df73af476eccf382bbcb00a/deps/zlib/inflate.c#L762-L764exploit, third-party-advisory
- http://www.openwall.com/lists/oss-security/2022/08/05/2mailing-list, third-party-advisory
- https://github.com/curl/curl/issues/9271exploit, issue-tracking, third-party-advisory
- http://www.openwall.com/lists/oss-security/2022/08/09/1mailing-list, patch, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YRQAI7H4M4RQZ2IWZUEEXECBE5D56BH2/vendor-advisory, mailing-list, third-party-advisory
- https://www.debian.org/security/2022/dsa-5218vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMBOJ77A7T7PQCARMDUK75TE6LLESZ3O/vendor-advisory, mailing-list, third-party-advisory
- https://security.netapp.com/advisory/ntap-20220901-0005/third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWN4VE3JQR4O2SOUS5TXNLANRPMHWV4I/vendor-advisory, mailing-list, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00012.htmlmailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5U7OTKZSHY2I3ZFJSR2SHFHW72RKGDK/vendor-advisory, mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAVPQNCG3XRLCLNSQRM3KAN5ZFMVXVTY/vendor-advisory, mailing-list, third-party-advisory
- https://support.apple.com/kb/HT213489third-party-advisory
- https://support.apple.com/kb/HT213488third-party-advisory
- https://support.apple.com/kb/HT213494
- https://support.apple.com/kb/HT213493third-party-advisory
- https://support.apple.com/kb/HT213491third-party-advisory
- https://support.apple.com/kb/HT213490third-party-advisory
- http://seclists.org/fulldisclosure/2022/Oct/41mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2022/Oct/38mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2022/Oct/37mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2022/Oct/42mailing-list, third-party-advisory
- https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d
- https://security.netapp.com/advisory/ntap-20230427-0007/third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.