THREATPORT/VULNERABILITY/CVE-2021-21064
MEDIUM SEVERITY

CVE-2021-21064

Upward Connector vulnerability

CVSS
4.9
EPSS
8.5%
EPSS pct
94th
Exploited
No known
Magento UPWARD-php version 1.1.4 (and earlier) is affected by a Path traversal vulnerability in Magento UPWARD Connector version 1.1.2 (and earlier) due to the upload feature. An attacker could potentially exploit this vulnerability to upload a malicious YAML file that can contain instructions which allows reading arbitrary files from the remote server. Access to the admin console is required for successful exploitation.
Affected vendor
Magento
Affected product
Upward Connector
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2021-02-25

Risk analysis

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

Its EPSS score of 8.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2021-21064

  • Confirm whether Magento Upward Connector is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-21064.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-21064

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-21064 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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