CVE-2026-52656

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-21. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An issue in SJCAM AllWinner Tech products SJ4000-Air V1.4C and before and Whitelabel based v.1.4C and before allows an attacker to execute arbitrary code via a crafted FEX file

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track)
EG Risk 75/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

SJCAM | Action Cameras & Body Cameras - Official Website

https://sjcam.com
generic

Keowu Blog's

https://keowu.re/posts/Lelouch--Reverse-Engineering-of-an-SJCAM-Action-Camera-with-proprietary-Android--based-firmware-and-Rewriting-a-completely-OpenSource-CFW

Vendor Advisories for CVE-2026-52656(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 39× in last 7d / 228× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 286 total refreshes for this CVE.

  1. 2026-08-30 06:23 UTCGHSA enrichment
  2. 2026-08-30 02:42 UTCEG score recompute
  3. 2026-08-30 02:42 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-28 01:41 UTCGHSA enrichment
  7. 2026-08-27 21:21 UTCEG score recompute
  8. 2026-08-27 21:21 UTCGHSA enrichment
  9. 2026-08-27 14:25 UTCEPSS rescore
  10. 2026-08-27 11:45 UTCGHSA enrichment
  11. 2026-08-27 01:51 UTCGHSA enrichment
  12. 2026-08-26 22:12 UTCGHSA enrichment
  13. 2026-08-26 15:32 UTCEG score recompute
  14. 2026-08-26 15:31 UTCGHSA enrichment
  15. 2026-08-26 14:46 UTCEPSS rescore
  16. 2026-08-26 11:41 UTCGHSA enrichment
  17. 2026-08-26 07:22 UTCGHSA enrichment
  18. 2026-08-26 02:23 UTCGHSA enrichment
  19. 2026-08-25 22:43 UTCGHSA enrichment
  20. 2026-08-25 18:45 UTCEG score recompute
  21. 2026-08-25 18:45 UTCGHSA enrichment
  22. 2026-08-25 13:49 UTCEPSS rescore
  23. 2026-08-25 13:28 UTCGHSA enrichment
  24. 2026-08-25 09:45 UTCGHSA enrichment
  25. 2026-08-25 06:04 UTCGHSA enrichment
Show 75 more
  1. 2026-08-25 02:24 UTCGHSA enrichment
  2. 2026-08-24 22:44 UTCGHSA enrichment
  3. 2026-08-24 19:01 UTCGHSA enrichment
  4. 2026-08-24 15:06 UTCEG score recompute
  5. 2026-08-24 15:06 UTCGHSA enrichment
  6. 2026-08-24 11:26 UTCEG score recompute
  7. 2026-08-24 11:26 UTCGHSA enrichment
  8. 2026-08-24 07:44 UTCGHSA enrichment
  9. 2026-08-24 03:43 UTCGHSA enrichment
  10. 2026-08-23 23:37 UTCGHSA enrichment
  11. 2026-08-23 19:57 UTCGHSA enrichment
  12. 2026-08-23 16:17 UTCGHSA enrichment
  13. 2026-08-23 12:35 UTCGHSA enrichment
  14. 2026-08-23 08:55 UTCGHSA enrichment
  15. 2026-08-23 05:16 UTCGHSA enrichment
  16. 2026-08-23 01:35 UTCEG score recompute
  17. 2026-08-23 01:35 UTCGHSA enrichment
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-22 21:56 UTCGHSA enrichment
  20. 2026-08-22 18:16 UTCGHSA enrichment
  21. 2026-08-22 14:35 UTCGHSA enrichment
  22. 2026-08-22 10:55 UTCGHSA enrichment
  23. 2026-08-22 07:15 UTCGHSA enrichment
  24. 2026-08-22 03:35 UTCGHSA enrichment
  25. 2026-08-21 23:55 UTCEG score recompute
  26. 2026-08-21 23:55 UTCGHSA enrichment
  27. 2026-08-21 23:49 UTCEPSS rescore
  28. 2026-08-21 20:15 UTCGHSA enrichment
  29. 2026-08-21 16:35 UTCGHSA enrichment
  30. 2026-08-21 12:41 UTCGHSA enrichment
  31. 2026-08-21 08:59 UTCGHSA enrichment
  32. 2026-08-21 05:15 UTCGHSA enrichment
  33. 2026-08-21 01:34 UTCEG score recompute
  34. 2026-08-21 01:34 UTCGHSA enrichment
  35. 2026-08-20 22:55 UTCEPSS rescore
  36. 2026-08-20 21:55 UTCGHSA enrichment
  37. 2026-08-20 18:15 UTCGHSA enrichment
  38. 2026-08-20 14:35 UTCGHSA enrichment
  39. 2026-08-20 10:11 UTCGHSA enrichment
  40. 2026-08-20 06:31 UTCGHSA enrichment
  41. 2026-08-20 02:51 UTCEG score recompute
  42. 2026-08-20 02:50 UTCGHSA enrichment
  43. 2026-08-19 22:54 UTCEG score recompute
  44. 2026-08-19 22:54 UTCGHSA enrichment
  45. 2026-08-19 17:04 UTCEPSS rescore
  46. 2026-08-19 15:03 UTCGHSA enrichment
  47. 2026-08-19 11:22 UTCGHSA enrichment
  48. 2026-08-19 07:39 UTCGHSA enrichment
  49. 2026-08-19 03:51 UTCGHSA enrichment
  50. 2026-08-18 23:20 UTCGHSA enrichment
  51. 2026-08-18 19:38 UTCEG score recompute
  52. 2026-08-18 19:38 UTCGHSA enrichment
  53. 2026-08-18 13:48 UTCEPSS rescore
  54. 2026-08-18 09:32 UTCGHSA enrichment
  55. 2026-08-18 05:52 UTCGHSA enrichment
  56. 2026-08-18 01:49 UTCGHSA enrichment
  57. 2026-08-17 21:03 UTCGHSA enrichment
  58. 2026-08-17 14:16 UTCEG score recompute
  59. 2026-08-17 14:16 UTCGHSA enrichment
  60. 2026-08-17 13:47 UTCEPSS rescore
  61. 2026-08-17 10:36 UTCGHSA enrichment
  62. 2026-08-17 06:56 UTCGHSA enrichment
  63. 2026-08-17 03:17 UTCGHSA enrichment
  64. 2026-08-16 23:37 UTCGHSA enrichment
  65. 2026-08-16 19:57 UTCGHSA enrichment
  66. 2026-08-16 16:17 UTCEG score recompute
  67. 2026-08-16 16:17 UTCGHSA enrichment
  68. 2026-08-16 14:56 UTCEPSS rescore
  69. 2026-08-16 12:37 UTCGHSA enrichment
  70. 2026-08-16 08:57 UTCGHSA enrichment
  71. 2026-08-16 05:17 UTCEG score recompute
  72. 2026-08-16 05:17 UTCGHSA enrichment
  73. 2026-08-16 02:14 UTCEPSS rescore
  74. 2026-08-16 01:38 UTCGHSA enrichment
  75. 2026-08-15 21:58 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCkeowu/sjcam
    First seen Dec 1, 2025

    Reverse engineering research and custom firmware for the Allwinner V3-based SJCAM SJ4000 Air, including firmware parsers, an AVIOCTRL client, security research, and the CVE-2026-52656 proof of concept.

    Open source ↗

Frequently asked(5)

What is CVE-2026-52656?
CVE-2026-52656 is a critical vulnerability published on July 20, 2026. An issue in SJCAM AllWinner Tech products SJ4000-Air V1.4C and before and Whitelabel based v.1.4C and before allows an attacker to execute arbitrary code via a crafted FEX file
When was CVE-2026-52656 disclosed?
CVE-2026-52656 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52656 actively exploited?
CVE-2026-52656 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 48.8% of all scored CVEs.
What is the CVSS score of CVE-2026-52656?
CVE-2026-52656 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-52656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52656, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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