Authenticated code execution via charset buffer overflow
Published May 21, 2026 · Updated May 21, 2026
Out-of-bounds write in Netatalk 2.0.4 through 4.4.2 allows remote authenticated users to execute code via crafted path data. In pull_charset_flags(), charset conversion can let the remaining output length underflow and then write a two-byte UCS-2 slash or colon beyond the output buffer. An authenticated AFP client must reach unusual conversion states with long filenames or paths; resulting memory corruption can execute code or crash the service.
Summary
What happened
Out-of-bounds write in Netatalk 2.0.4 through 4.4.2 allows remote authenticated users to execute code via crafted path data. In pull_charset_flags(), charset conversion can let the remaining output length underflow and then write a two-byte UCS-2 slash or colon beyond the output buffer. An authenticated AFP client must reach unusual conversion states with long filenames or paths; resulting memory corruption can execute code or crash the service.
The record
- CVE
- CVE-2026-44062
- Published
- May 21, 2026
- Updated
- May 21, 2026
- Vendor
- Netatalk
- Product
- Netatalk
- Classifications
- T1190
- Attack vector
- network
- Privileges
- authenticated
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=2.0.4 <=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
- Netatalk 4.4.2 disclosure packageproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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