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TI-2026-84025 Aliases CVE-2026-119738GHSA-wf2f-xx3j-mr34

Infinite loop in Amlogic DroidLogic SubTitleService VobSub decoder

Priority HIGH 70CWE-835Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-835.

Summary

The VobSub decoder libsub_vob in Amlogic DroidLogic SubTitleService, shipped on Nexbox A95X TV boxes, has an infinite loop in get_vob_spu() caused by mismatched length fields (CWE-835). An unauthenticated remote attacker can send crafted AMLU data blocks to the tcp/10100 listener, or a local user can load a malicious VobSub file, to make the decode thread spin at 100% CPU and cause denial of service. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

The VobSub subtitle decoder libsub_vob (part of the Amlogic DroidLogic SubTitleService), as shipped on Nexbox A95X (Amlogic S905X) TV boxes, contains an infinite loop vulnerability in get_vob_spu() that allows unauthenticated network attackers or local users loading malicious files to trigger an unreachable loop exit condition via mismatched length fields. Attackers can send crafted AMLU data blocks over the unauthenticated tcp/10100 listener or via a malicious VobSub (.sub) file to cause the subtitle decode thread to spin at 100% CPU indefinitely, resulting in denial of service.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00289 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
NexboxA95XNEXBOX-A95X-AP6330—No fix listedCNA
AmlogicAmlogic Android SDKall versions—No fix listedCNA
  • A95X VendorNexbox Affected NEXBOX-A95X-AP6330 Fixed in — No fix listed CNA
  • Amlogic Android SDK VendorAmlogic Affected all versions Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Nexbox A95X. The sources list no fixed version for Amlogic Android SDK.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-119738
  2. 2026-11-02 Alias added: GHSA-wf2f-xx3j-mr34
  3. 2026-11-04 Priority changed: MEDIUM → LOW
  4. 2026-11-07 CISA SSVC decision points changed
  5. 2026-11-07 Priority changed: LOW → HIGH

References

Exploit 1

  • TI-2026-84024 Amlogic pppoe_wrapper Command Injection via AF_UNIX Socket CVSS 4.0HIGH 8.5
  • TI-2026-84101 Unauthenticated UART console in Nexbox A95X TV boxes CVSS 4.0HIGH 7.0
  • TI-2026-84026 Out-of-bounds write in Amlogic DroidLogic VobSub subtitle decoder CVSS 4.0MEDIUM 6.9

Sources

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