CVE-2022-37434
CVSS v3
9.8
CRITICAL
EPSS Score
16.0 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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).
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2022-08-05
- Last Modified
- 2026-07-14
Frequently asked questions
What is 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).
Is CVE-2022-37434 actively exploited?
Active exploitation of CVE-2022-37434 has not been confirmed. The EPSS score is 16.0%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-37434?
CVE-2022-37434 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
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