Vulnerability · CVE-2025-15581
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation.
Published Feb 18, 2026 · catalog updated Feb 28, 2026 · Orthanc versions before 1.12.10
Last checked Nov 12, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-15581. EPSS is 0.56%. Act only if a listed version of Orthanc versions before 1.12.10 is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Orthanc versions before 1.12.10).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-5445 · Critical
- CVE-2026-5444 · High
- CVE-2026-5443 · Critical
- CVE-2026-5442 · Critical
- CVE-2026-5441 · High
- Severity
- Medium4.7
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.56%
- Remediation
- Vendor / distro source
- Affected products
- vendor orthanc-server orthanc 0 ≤1.12.9
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in Privilege Escalation, potentially allowing full administrative access.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor orthanc-server orthanc 0 ≤1.12.90 ≤1.12.9
How to fix CVE-2025-15581
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 0 ≤1.12.9
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-15581. EPSS is 0.56%. Act only if a listed version of Orthanc versions before 1.12.10 is installed.
Which versions are affected?
Compare what you have installed with orthanc-server orthanc 0 ≤1.12.9 0 ≤1.12.9. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.56%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 18, 2026 · EUVD
Detected
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in Privilege Escalation, potentially allowing full administrative access.
Feb 28, 2026 · EUVD
Updated
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in Privilege Escalation, potentially allowing full administrative access.
Sources
- CVE.orgVulnerability recordCVE-2025-15581
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-15581
30-day exploitation probability 0.56%
first.org - EUVDVulnerability recordEUVD-2025-207858
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in Privilege Escalation, potentially allowing full administrative access.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 12, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 9, 2026
- CVE.orgNov 8, 2026
- EUVDNov 8, 2026