Security readout for executives and security teams
Plain-English summary
This is an old WordPress plugin issue affecting EWWW Image Optimizer before 2.8.5. On PHP versions before 5.5, a missing boolval function undermined a protection mechanism and could allow remote command execution. Treat exposed legacy WordPress sites as high risk until inventory proves otherwise.
Executive priority
Prioritize remediation for legacy WordPress environments because the described impact is remote command execution. Urgency is highest where the site is public-facing, business-critical, or still running obsolete PHP. Lack of KEV evidence lowers certainty about active exploitation, not impact.
Technical view
The CVE describes remote command execution in EWWW Image Optimizer before 2.8.5 when running on PHP before 5.5. The stated root condition is reliance on boolval, which is unavailable in those PHP versions. The source bundle does not provide CVSS, CWE, exploit details, or affected CPEs.
Likely exposure
Likely exposure is WordPress sites with EWWW Image Optimizer older than 2.8.5, especially on PHP earlier than 5.5. The provided affected-product metadata is incomplete, so confirm by plugin inventory and runtime configuration rather than CPE matching.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Public disclosure exists through Wordfence and WordPress plugin changelog references, so defenders should assume the issue is known and searchable.
Researcher notes
Evidence is sparse: no CVSS, CWE, CPE, exploit maturity, or detailed vulnerable code path is included. The defensible exposure test is plugin version plus PHP version. Do not infer other EWWW products or versions beyond the stated before-2.8.5 condition.
Mitigation direction
- Upgrade EWWW Image Optimizer to version 2.8.5 or later.
- Remove or disable the plugin until it can be updated.
- Identify any sites still running PHP before 5.5.
- Check vendor changelog and Wordfence guidance for site-specific remediation.
- Prioritize internet-facing WordPress sites first.
Validation and detection
- Inventory WordPress sites for EWWW Image Optimizer installations.
- Confirm installed plugin versions are 2.8.5 or later.
- Record each site's PHP runtime version.
- Review web server logs for suspicious activity around affected sites.
- Verify no exposed site relies on incomplete CPE detection alone.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2016-20010 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/blog/2016/06/vulnerability-ewww-image-optimizer/CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/trunk/changelog.txtCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.