HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string…
Priority LOW 13CWE-134Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00251 16th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Revive | Revive Adserver | 6 – 6.0.4 | — | No fix listed | CNA |
- Revive Adserver VendorRevive Affected 6 – 6.0.4 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:aquaplatform:revive_adserver:*:*:*:*:*:*:*:* | 6.0.0 – 6.0.4 | Vulnerable | Aquaplatform |
- cpe:2.3:a:aquaplatform:revive_adserver:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.0.4 Vulnerable ·Aquaplatform
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-21640
- 2026-10-03 Alias added: GHSA-cr56-64wj-q2r7
References
Advisory 1
More Revive vulnerabilities
- TI-2025-31114 Improper access control in Revive Adserver CVSS 3.0HIGH 8.8
- TI-2025-34810 Cross-site scripting in Revive Adserver CVSS 3.0MEDIUM 6.5
- TI-2022-04278 Revive Old Posts – Social Media Auto Post and Scheduling Plugin < 9.0.11 - PHP Object Injection CVSS 3.1HIGH 7.2
- TI-2023-11756 The login page of Revive Adserver v5.4.1 is vulnerable to brute force attacks. CVSS 3.1HIGH 7.5
- TI-2025-34812 Uncontrolled resource consumption in Revive Adserver CVSS 3.0MEDIUM 6.5
- TI-2025-32749 Missing authorization in Revive Adserver CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-21640 · CVE Program
- CVE-2026-21640 · NVD
- FIRST EPSS
- GHSA-cr56-64wj-q2r7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences