TLS data compromise via weak server key
Published Jun 4, 2025 · Updated Jun 4, 2025
Inadequate encryption strength in Acronis Cyber Protect 16 before build 39938 allows attackers to read or alter TLS data via a weak server key. Acronis identifies the cryptographic defect only as a weak server key used for TLS encryption and does not disclose its algorithm, size, reuse, storage, or endpoint. Attackers require adjacent network access and high attack complexity but no authentication or user interaction; successful attacks disclose limited protected content or alter protected traffic without interrupting service.
Summary
What happened
Inadequate encryption strength in Acronis Cyber Protect 16 before build 39938 allows attackers to read or alter TLS data via a weak server key. Acronis identifies the cryptographic defect only as a weak server key used for TLS encryption and does not disclose its algorithm, size, reuse, storage, or endpoint. Attackers require adjacent network access and high attack complexity but no authentication or user interaction; successful attacks disclose limited protected content or alter protected traffic without interrupting service.
The record
- CVE
- CVE-2025-48960
- Published
- Jun 4, 2025
- Updated
- Jun 4, 2025
- Vendor
- Acronis
- Product
- Acronis Cyber Protect
- Classifications
- CWE-326, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 4, 2025CVE publishedPublication date reported by the CVE source.
- Jun 4, 2025Record 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=unspecified <39938
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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