THREATPORT/VULNERABILITY/CVE-2021-24579
HIGH SEVERITY

CVE-2021-24579

Bold Page Builder vulnerability

CVSS
8.8
EPSS
8.2%
EPSS pct
94th
Exploited
No known
The bt_bb_get_grid AJAX action of the Bold Page Builder WordPress plugin before 3.1.6 passes user input into the unserialize() function without any validation or sanitisation, which could lead to a PHP Object Injection. Even though the plugin did not contain a suitable gadget to fully exploit the issue, other installed plugins on the blog could allow such issue to be exploited and lead to RCE in some cases.
Affected vendor
Bold Themes
Affected product
Bold Page Builder
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-502 — Deserialization of Untrusted Data
Published
2021-08-30

Risk analysis

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

Its EPSS score of 8.2% 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-2021-24579

  • Confirm whether Bold Themes Bold Page Builder is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-24579.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-24579

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-24579 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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