CVE-2026-20451: In slbc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of…

CVE-2026-20451 · Severity: medium · CVSS 6.7 · Published 2026-05-04

In slbc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10828685; Issue ID: MSV-6504.

Technologies: MediaTek Mt2718, MediaTek Mt2718 Firmware, MediaTek Mt6899, MediaTek Mt6899 Firmware, MediaTek Mt6985, MediaTek Mt6985 Firmware, MediaTek Mt6989, MediaTek Mt6989 Firmware, MediaTek Mt6991, MediaTek Mt6991 Firmware, MediaTek Mt8186, MediaTek Mt8186 Firmware, MediaTek Mt8188, MediaTek Mt8188 Firmware, MediaTek Mt8196, MediaTek Mt8196 Firmware, MediaTek Mt8367, MediaTek Mt8367 Firmware, MediaTek Mt8370, MediaTek Mt8390, MediaTek Mt8390 Firmware, MediaTek Mt8391, MediaTek Mt8391 Firmware, MediaTek Mt8395, MediaTek Mt8395 Firmware, MediaTek MT8676, MediaTek Mt8676 Firmware, MediaTek MT8678, MediaTek Mt8678 Firmware, MediaTek Mt8766, MediaTek Mt8766 Firmware, MediaTek Mt8768, MediaTek Mt8768 Firmware, MediaTek MT8775, MediaTek Mt8775 Firmware, MediaTek Mt8781, MediaTek Mt8781 Firmware, MediaTek Mt8786, MediaTek Mt8786 Firmware, MediaTek Mt8788e, MediaTek Mt8788e Firmware, MediaTek Mt8791t, MediaTek Mt8791t Firmware, MediaTek MT8792, MediaTek Mt8792 Firmware, MediaTek Mt8793, MediaTek Mt8793 Firmware, MediaTek MT8796, MediaTek Mt8796 Firmware, MediaTek MT8873, MediaTek Mt8873 Firmware, MediaTek MT8883, MediaTek Mt8883 Firmware, MediaTek MT8893, MediaTek Mt8893 Firmware, MediaTek Mt8910, MediaTek Mt8910 Firmware. Vendors: MediaTek.

Quick answers

Is CVE-2026-20451 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-20451 being exploited in the wild.
How severe is CVE-2026-20451?
Medium severity, with a CVSS score of 6.7, published 4 May 2026.
Which products and versions are affected?
MediaTek Mt2718, MediaTek Mt2718 Firmware, MediaTek Mt6899, MediaTek Mt6899 Firmware and 60 more. The advisory does not name versions.
Is there a fix for CVE-2026-20451?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-20451?
Check whether you run MediaTek Mt2718, MediaTek Mt2718 Firmware, MediaTek Mt6899 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • MediaTek Mt2718
  • MediaTek Mt2718 Firmware
  • MediaTek Mt6899
  • MediaTek Mt6899 Firmware
  • MediaTek Mt6985
  • MediaTek Mt6985 Firmware
  • MediaTek Mt6989
  • MediaTek Mt6989 Firmware
  • MediaTek Mt6991
  • MediaTek Mt6991 Firmware
  • MediaTek Mt8115
  • MediaTek Mt8115 Firmware
  • MediaTek Mt8186
  • MediaTek Mt8186 Firmware
  • MediaTek Mt8188
  • MediaTek Mt8188 Firmware
  • MediaTek Mt8196
  • MediaTek Mt8196 Firmware
  • MediaTek Mt8365
  • MediaTek Mt8365 Firmware
  • MediaTek Mt8367
  • MediaTek Mt8367 Firmware
  • MediaTek Mt8370
  • MediaTek Mt8370 Firmware
  • MediaTek Mt8371
  • MediaTek Mt8371 Firmware
  • MediaTek Mt8390
  • MediaTek Mt8390 Firmware
  • MediaTek Mt8391
  • MediaTek Mt8391 Firmware
  • MediaTek Mt8395
  • MediaTek Mt8395 Firmware
  • MediaTek MT8676
  • MediaTek Mt8676 Firmware
  • MediaTek MT8678
  • MediaTek Mt8678 Firmware
  • MediaTek Mt8766
  • MediaTek Mt8766 Firmware
  • MediaTek Mt8768
  • MediaTek Mt8768 Firmware
  • MediaTek MT8775
  • MediaTek Mt8775 Firmware
  • MediaTek Mt8781
  • MediaTek Mt8781 Firmware
  • MediaTek Mt8786
  • MediaTek Mt8786 Firmware
  • MediaTek Mt8788e
  • MediaTek Mt8788e Firmware
  • MediaTek Mt8791t
  • MediaTek Mt8791t Firmware
  • MediaTek MT8792
  • MediaTek Mt8792 Firmware
  • MediaTek Mt8793
  • MediaTek Mt8793 Firmware
  • MediaTek MT8796
  • MediaTek Mt8796 Firmware
  • MediaTek MT8873
  • MediaTek Mt8873 Firmware
  • MediaTek MT8883
  • MediaTek Mt8883 Firmware
  • MediaTek MT8893
  • MediaTek Mt8893 Firmware
  • MediaTek Mt8910
  • MediaTek Mt8910 Firmware

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