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.
CVE-2026-7836
LOWNVD 3.13.1—
EchelonGraph scoreMEDIUM confidence
Score 3.1 from GitHub Security Advisory (severity: LOW) published 2026-05-21. NVD baseline CVSS 3.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
3.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 3.1Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.1
- EG Score
- 3.1(medium)
- EPSS
- 17.1%
- KEV
- Not listed
Published
May 21, 2026
Last Modified
May 21, 2026
References (1)
- 33c584b5-0579-4c06-b2a0-8d8329fcab9chttps://netatalk.io/security/CVE-2026-7836
Vendor Advisories for CVE-2026-7836(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Frequently asked(5)
What is CVE-2026-7836?
CVE-2026-7836 is a low vulnerability published on May 21, 2026. 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.
When was CVE-2026-7836 disclosed?
CVE-2026-7836 was first published in the National Vulnerability Database on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7836 actively exploited?
CVE-2026-7836 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7836?
CVE-2026-7836 has a CVSS v3 base score of 3.1 (NVD).
How do I remediate CVE-2026-7836?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7836, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-7836
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