Physical communications compromise via improper PRNG seeding
Published Nov 18, 2025 · Updated Nov 19, 2025
Incorrect PRNG seeding in Gallagher High Sec End of Line Module allows physically proximate attackers to compromise internal communications. Gallagher has not published the affected PRNG locus or whether seed reuse, predictability, or inadequate entropy causes the communication compromise. Exploitation requires physical access, high complexity, and a site using the module; it permits disclosure or modification of internal device communications but does not interrupt service.
Summary
What happened
Incorrect PRNG seeding in Gallagher High Sec End of Line Module allows physically proximate attackers to compromise internal communications. Gallagher has not published the affected PRNG locus or whether seed reuse, predictability, or inadequate entropy causes the communication compromise. Exploitation requires physical access, high complexity, and a site using the module; it permits disclosure or modification of internal device communications but does not interrupt service.
The record
- CVE
- CVE-2025-52578
- Published
- Nov 18, 2025
- Updated
- Nov 19, 2025
- Vendor
- Gallagher Security
- Product
- High Sec End of Line Module
- Classifications
- CWE-335
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 18, 2025CVE publishedPublication date reported by the CVE source.
- Nov 19, 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=0 <=9.00
- Affected versionversion=9.10 <vCR9.10.251028a
- Affected versionversion=9.20 <vCR9.20.251028a
- Affected versionversion=9.30 <vCR9.30.251028a
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.
Weakness, pattern, technique
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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