THREATPORT/VULNERABILITY/CVE-2021-36090
HIGH SEVERITY

CVE-2021-36090

Commons Compress vulnerability

CVSS
7.5
EPSS
12.9%
EPSS pct
96th
Exploited
No known
When reading a specially crafted ZIP archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' zip package.
Affected vendor
Apache
Affected product
Commons Compress
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
Published
2021-07-13

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 availability.

Its EPSS score of 12.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2021-36090

  • Confirm whether Apache Commons Compress is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-36090.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-36090

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-36090 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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