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TI-2026-06895 Aliases CVE-2026-7836GHSA-766c-rr8x-xjvp

hextoint macro uppercase bug

Priority LOW 15CWE-682Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00257 17th percentileScored 2026-11-07
Fix Fixed Netatalk (Netatalk): 4.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NetatalkNetatalk2.0.0 – 4.4.24.5.0Patch availableCNA
  • Netatalk VendorNetatalk Affected 2.0.0 – 4.4.2 Fixed in 4.5.0 Patch available CNA

Remediation

  • Fix · CNA Netatalk (Netatalk) Fixed in 4.5.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-7836
  2. 2026-10-03 Alias added: GHSA-766c-rr8x-xjvp

References

Advisory 1

  • TI-2018-01076 Out-of-bounds write in Netatalk CVSS 3.1CRITICAL 9.8
  • TI-2024-25689 Netatalk before 3.2.1 has an off-by-one error and resultant heap-based buffer overflow… CVSS 3.1CRITICAL 9.8
  • TI-2024-25690 Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow… CVSS 3.1HIGH 7.5
  • TI-2022-22254 Netatalk through 3.1.13 has an afp_getappl heap-based buffer overflow resulting in code… CVSS 3.1HIGH 7.8
  • TI-2022-21402 Heap-based buffer overflow in Netatalk CVSS 3.1CRITICAL 9.8
  • TI-2022-07290 Improper handling of exceptional conditions in Netatalk CVSS 3.1CRITICAL 9.8
See all 51 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences