Vulnerability · Published May 21, 2026 · Assigned by securin
CVE-2026-7836hextoint macro uppercase bug
Low 3.1
In plain English
A low-severity security flaw in Netatalk from Netatalk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.3%top 82.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An incorrect calculation in the hextoint macro in Netatalk 2.0.0 through 4.4.2 due to improper uppercase character handling allows a remote authenticated attacker to cause limited data modification via crafted hexadecimal input.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | netatalk | 4.5.0-r0 | ALPINE-CVE-2026-7836 |
| Debian:13 | netatalk | no fix listed | DEBIAN-CVE-2026-7836 |
| Debian:14 | netatalk | 4.5.0~ds-1 | DEBIAN-CVE-2026-7836 |
| Ubuntu:25.10 | netatalk | no fix listed | UBUNTU-CVE-2026-7836 |
| Ubuntu:26.04:LTS | netatalk | no fix listed | UBUNTU-CVE-2026-7836 |
| Ubuntu:26.10 | netatalk | no fix listed | UBUNTU-CVE-2026-7836 |
Affected products (as reported)
Weakness: CWE-682 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- Netatalk Security Advisory CVE-2026-7836 vendor-advisory