Limited data exposure via buffer-size underflow
Published May 21, 2026 · Updated May 21, 2026
Integer underflow in Netatalk 3.0.0 through 4.4.2 allows local users with administrative privileges to disclose or modify limited data. The volxlate function subtracts the reported formatted-output length from the remaining destination size without checking whether the output exceeded the available buffer. Reachability requires control of volume translation input, normally an administrator-controlled configuration value, and can also interrupt the service.
Summary
What happened
Integer underflow in Netatalk 3.0.0 through 4.4.2 allows local users with administrative privileges to disclose or modify limited data. The volxlate function subtracts the reported formatted-output length from the remaining destination size without checking whether the output exceeded the available buffer. Reachability requires control of volume translation input, normally an administrator-controlled configuration value, and can also interrupt the service.
The record
- CVE
- CVE-2026-44069
- Published
- May 21, 2026
- Updated
- May 21, 2026
- Vendor
- Netatalk
- Product
- Netatalk
- Classifications
- CWE-191
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 21, 2026CVE publishedPublication date reported by the CVE source.
- May 21, 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=3.0.0 <=4.4.2
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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