Privilege escalation
Published Aug 11, 2026 · Updated Aug 11, 2026
Improper input validation in Adobe ColdFusion 2023 and 2025 allows remote authenticated users to escalate privileges through a malicious file. Adobe has not disclosed the affected component or the invalid input operation performed on the file. Exploitation requires low privileges and a victim to open the file on 2023.0.22 and earlier or 2025.0.11 and earlier, granting unauthorized read and write access without service interruption.
Summary
What happened
Improper input validation in Adobe ColdFusion 2023 and 2025 allows remote authenticated users to escalate privileges through a malicious file. Adobe has not disclosed the affected component or the invalid input operation performed on the file. Exploitation requires low privileges and a victim to open the file on 2023.0.22 and earlier or 2025.0.11 and earlier, granting unauthorized read and write access without service interruption.
The record
- CVE
- CVE-2026-21273
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Vendor
- Adobe
- Product
- Adobe ColdFusion
- Classifications
- CWE-20, T1204.002
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=2023.0.22
- Affected versionversion=0 <=2025.0.11
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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