Format string argument mismatch

published 2026-05-21 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-31223

cvss: 3.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits: 0; none known

A format string argument mismatch in Netatalk 3.0.3 through 4.4.2 allows a remote authenticated attacker to cause a minor denial of service via crafted input that triggers incorrect format string processing.

Patch / fix

fixed in 1 distros 2

Netatalk Netatalk 4.5.0

debian alpine

netatalk Debian 14 4.5.0~ds-1

debian advisories DEBIAN-CVE-2026-7835

netatalk Alpine 3.24 4.5.0-r0

alpine advisories ALPINE-CVE-2026-7835

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-7835 updated 2026-06-28 cvss 3.1

netatalk: Netatalk: Denial of Service via format string argument mismatch

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-21)

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected products

Netatalk Netatalk

Classification

Weakness

CWE-134 Use of Externally-Controlled Format String

References

netatalk.io /security/CVE-2026-7835
vendor-advisory

Sources

CVE List CVE-2026-7835
NVD CVE-2026-7835

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary