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TI-2026-73753 Aliases CVE-2026-50216GHSA-426c-439h-xj38

Integer underflow in Akamai Guardicore Platform Agent DNS proxy

Priority LOW 30CWE-191Published · Updated

Key facts

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

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

Summary

Akamai Guardicore Platform Agent (GPA) for macOS versions from 0 before 7.4 are affected. An integer underflow in the DNS proxy component of the macOS NetworkExtension system extension lets a remote attacker send a short UDP datagram that causes a size computation to wrap around. The resulting allocation failure and uncaught Objective-C exception abort the root system extension, with a low availability impact and no required privileges or user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

An integer underflow exists in the DNS proxy component of the macOS NetworkExtension system extension shipped with Akamai Guardicore Platform Agent (GPA) for macOS, whereby if a UDP datagram shorter than 96 bytes that begins with a specific value is received, a subsequent size computation underflows to a near-SIZE_MAX value, causing an allocation failure and uncaught Objective-C exception that aborts the root system extension.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00325 25th percentileScored 2026-11-07
Fix Fixed Guardicore Platform Agent (Akamai): 7.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
AkamaiGuardicore Platform Agentbefore 7.47.4Patch availableCNA
  • Guardicore Platform Agent VendorAkamai Affected before 7.4 Fixed in 7.4 Patch available CNA

Remediation

Update Akamai Guardicore Platform Agent for macOS to version 7.4 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Guardicore Platform Agent (Akamai) Fixed in 7.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Akamai Guardicore Platform Agent 7.4

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-73755 Guardicore Platform Agent JWT flaw enables resource injectionPriority LOW 39
    • TI-2026-73751 Command injection in Akamai Guardicore Platform Agent for macOSPriority LOW 35
    • TI-2026-73754 Akamai Guardicore GPA Use-After-Free Denial of ServicePriority LOW 20
    Show all 5 records →

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-50216
  2. 2026-10-14 Alias added: GHSA-426c-439h-xj38
  3. 2026-10-14 CISA SSVC decision points changed

References

Other 2

  • TI-2025-31529 Akamai CloudTest before 60 2025.06.02 (12988) allows file inclusion via XML External Entity (XXE) injection. CVSS 3.1MEDIUM 5.8
  • TI-2008-01698 CRLF injection vulnerability in Akamai Download Manager ActiveX control before 2.2.3.6… CVSS 2.0HIGH 9.3
  • TI-2019-08229 Akamai CloudTest before 58.30 allows remote code execution. CVSS 3.0CRITICAL 9.8
  • TI-2019-13582 Enterprise Access Client Auto-Updater allows for Remote Code Execution prior to version 2.0.1. CVSS 3.1CRITICAL 9.8
  • TI-2016-08233 Akamai NetSession 1.9.3.1 is vulnerable to DLL Hijacking: it tries to load CSUNSAPI.dll… CVSS 3.0CRITICAL 9.8
  • TI-2026-73755 Guardicore Platform Agent JWT flaw enables resource injection CVSS 3.1HIGH 8.5
See all 21 →

Sources

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