Security readout for executives and security teams
Plain-English summary
CVE-2026-25399 is a medium-severity access-control issue in the WordPress Serious Slider plugin by CryoutCreations, affecting versions up to 1.2.7. A logged-in user may be able to reach functionality they should not be authorized to use. The published impact is limited to availability, not data theft or content alteration.
Executive priority
Treat as a normal-priority WordPress plugin remediation, not an emergency. Address quickly on externally facing or membership sites, especially where untrusted users can log in. The known impact is limited, but plugin access-control flaws can create operational disruption.
Technical view
The issue is CWE-862 Missing Authorization in cryout-serious-slider. CVSS 3.1 is 4.3: network exploitable, low complexity, low privileges required, no user interaction, unchanged scope, and low availability impact only. Public sources do not describe the vulnerable endpoint, required role, exploit method, or patched version.
Likely exposure
Exposure is limited to WordPress sites running Serious Slider version 1.2.7 or earlier. Because exploitation requires an authenticated user, risk is higher on sites with many subscribers, contributors, customers, or other low-privilege accounts.
Exploitation context
The CVE record does not indicate CISA KEV listing, and the provided sources do not report active exploitation. The vulnerability is easier to attempt than complex bugs, but requires login credentials and has only low availability impact per the CVSS vector.
Researcher notes
Public details are sparse. The CVE identifies missing authorization in Serious Slider through 1.2.7 with CWE-862 and CVSS 4.3. Do not assume confidentiality or integrity impact from the available record. Further validation should rely on vendor/Patchstack details and controlled testing, not unauthenticated scanning assumptions.
Mitigation direction
- Inventory WordPress sites for the Serious Slider plugin and its installed version.
- Prioritize sites allowing public registration or many low-privilege user accounts.
- Check CryoutCreations, WordPress.org, or Patchstack guidance for an updated fixed release.
- If no fix is available, consider disabling the plugin where business impact is acceptable.
- Restrict creation and use of unnecessary WordPress accounts.
Validation and detection
- Confirm whether Serious Slider is installed on each WordPress instance.
- Record the plugin version and flag versions 1.2.7 or earlier.
- Review vendor or Patchstack advisories for current remediation status.
- Check WordPress user roles for excessive or unnecessary low-privilege accounts.
- Monitor application logs for unusual authenticated activity affecting slider functionality.
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.
CWE-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-25399 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
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source materials
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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.