THREATPORT/VULNERABILITY/CVE-2022-37434
CRITICAL SEVERITY

CVE-2022-37434

Zlib vulnerability

CVSS
9.8
EPSS
16.0%
EPSS pct
97th
Exploited
No known
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).
Affected vendor
Zlib
Affected product
Zlib
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2022-08-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 16.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2022-37434

  • Confirm whether Zlib Zlib is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-37434.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-37434

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-37434 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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