A missing output length bounds check in pull_charset_flags() in Netatalk 2.0.4 through 4.4.2...

Description

A missing output length bounds check in pull_charset_flags() in Netatalk 2.0.4 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code or cause a denial of service via crafted character set data.

Basic information

Type
unreviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Source code
Not specified
Published (advisory)
2026-05-21 09:32:10 UTC
Updated
2026-05-21 09:32:16 UTC
NVD published
2026-05-21

EPSS Score

Score Percentile
0.19% 40.77%

CVSS Scores

Base score Version Severity Vector
7.5 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-787 Out-of-bounds Write

References

cvelogic Threat Intelligence