CVE-2026-20766: Milesight Cameras Heap-based Buffer Overflow

Published Apr 27, 2026
·
Updated

An out-of-bounds memory access vulnerability exists in specific firmware versions of Milesight AIOT cameras.

Affected Software

1 affected component
Milesight Milesight AIoT Cameras

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C2964-RFLPC
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C2966-RFLWPC
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C2966-X12RLPC
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C2966-X12RLVPC
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C2972-RFLPC
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 62.8.0.4-r6Patch MS-C5321-FPE
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C5361-X12LPC
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C5366-X12LPC
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch MS-C5366-X12LVPC
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.4-r4Patch MS-C8477-HPG1
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 48.8.0.4-r4Patch MS-C8477-PC
  12. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in CQ_63.8.0.5-r2Patch MS-CQxx31-xxxG1
  13. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in CQ_63.8.0.5-r2Patch MS-CQxx68-xxxG1
  14. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in CQ_63.8.0.5-r2Patch MS-CQxx72-xxxG1
  15. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx41-xxxPE
  16. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx52-xxxPE
  17. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx61-xxxPE
  18. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r4Patch MS-Cxx62-xxxG1
  19. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx62-xxxPE
  20. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 51.7.0.77-r13Patch MS-Cxx63-PD
  21. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 51.7.0.77-r13Patch MS-Cxx64-xPD
  22. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx65-PE
  23. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r2-NXPatch MS-Cxx66-FIPKG1
  24. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r2-NXPatch MS-Cxx66-RFIPKG1
  25. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r4Patch MS-Cxx66-xxxG1
  26. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx66-xxxGPE
  27. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx66-xxxPE
  28. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 45.8.0.2-AIoT-r5Patch MS-Cxx66-xxxxGOPC
  29. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx67-xxxPE
  30. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx71-xxxPE
  31. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r2-NXPatch MS-Cxx72-FIPKG1
  32. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r2-NXPatch MS-Cxx72-RFIPKG1
  33. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 63.8.0.5-r4Patch MS-Cxx72-xxxG1
  34. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx72-xxxPE
  35. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 51.7.0.77-r13Patch MS-Cxx73-xPD
  36. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 3x.8.0.3-r13Patch MS-Cxx74-PA
  37. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 51.7.0.77-r13Patch MS-Cxx75-xxPD
  38. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 61.8.0.5-r2Patch MS-Cxx76-PE
  39. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 51.7.0.77-r13Patch MS-Cxx83-xPD
  40. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7x.9.0.19-r6Patch MS-Nxxxx-NxE
  41. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7x.9.0.19-r6Patch MS-Nxxxx-xxC
  42. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7x.9.0.19-r6Patch MS-Nxxxx-xxE
  43. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7x.9.0.19-r6Patch MS-Nxxxx-xxG
  44. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7x.9.0.19-r6Patch MS-Nxxxx-xxH
  45. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7x.9.0.19-r6Patch MS-Nxxxx-xxT
  46. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in PI_61.8.0.3-r5Patch PM3322-E
  47. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in PO_61.8.0.4-r1Patch PMC8266-FGPE
  48. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in PO_61.8.0.4-r1Patch PMC8266-FPE
  49. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in C_21.1.0.8-r5Patch SC211
  50. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 52.8.0.4-r6Patch SP111
  51. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2841-X36TPC/W
  52. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2841-X36TPC
  53. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2866-X4TGPC
  54. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2866-X4TPC
  55. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2866-X4TVPC
  56. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2867-X5TPC
  57. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS2961-X12TPC
  58. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS2966-X12TPE
  59. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS2966-X12TVPE
  60. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS4441-X36RE
  61. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS4441-X36RPE
  62. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS4466-RFIVPG1
  63. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS4466-X4RIPG1
  64. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS4466-X4RIVPG1
  65. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS4466-X4RIWG1
  66. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS4466-X4RPE
  67. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS4466-X4RVPE
  68. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS4466-X4RWE
  69. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS5366-X12PE
  70. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS5366-X12RIPG1
  71. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS5366-X12VPE
  72. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_47.8.0.4-r8Patch TS5510-GH
  73. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_47.8.0.4-r8Patch TS5510-GVH
  74. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_47.8.0.4-r8Patch TS5511-GVH
  75. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_45.8.0.3-r10Patch TS8266-FPC/P
  76. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS8266-RFIVPG1
  77. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS8266-X4PE
  78. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS8266-X4RIPG1
  79. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS8266-X4RIVPG1
  80. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_63.8.0.4-r4Patch TS8266-X4RIWG1
  81. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS8266-X4VPE
  82. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in T_61.8.0.4-r4Patch TS8266-X4WE
  83. Operational

    Report potential Milesight security vulnerabilities by emailing security@milesight.com.

Event History

Apr 27, 2026
CVE Published
via MITRE·11:45 PM
Data Sourced
via MITRE·11:45 PM
RemedyDescriptionSeverityWeakness
Apr 28, 2026
Data Sourced
via NVD·01:16 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2026-20766?

CVE-2026-20766 has been classified as a high severity vulnerability due to its potential for exploitation through a heap-based buffer overflow.

2

How do I fix CVE-2026-20766?

To fix CVE-2026-20766, users should update to the latest firmware version provided by Milesight for the affected AIOT cameras.

3

What are the potential impacts of CVE-2026-20766?

Exploitation of CVE-2026-20766 could lead to arbitrary code execution, loss of confidentiality, and complete control over the affected devices.

4

Which products are affected by CVE-2026-20766?

CVE-2026-20766 affects specific firmware versions of Milesight AIOT Cameras.

5

Is there a workaround for CVE-2026-20766?

Currently, there are no specific workarounds available for CVE-2026-20766 other than applying the firmware update.

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Contact

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