CVE-2026-63563

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-03. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

Sharp and Toshiba Tec MFPs (multifunction printers) for a certain market have been shipped with the user authentication feature disabled in the initial configuration. When used with the initial configuration, the address book editing and a range of features related to Document Filing can be accessed without user authentication. Products intended for the Japanese market are not affected.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 3, 2026

Advisory Details (5)

Auto-updated Aug 3, 2026
No patch confirmed yet.
generic

JVNVU#98759887: Multiple vulnerabilities in Sharp and Toshiba Tec MFPs

https://jvn.jp/en/vu/JVNVU98759887/
generic

東芝テック製デジタル複合機の一部製品における脆弱性対応について | お知らせ | 東芝テック株式会社

https://www.toshibatec.co.jp/news/info/20260731-01.html
generic

Response to vulnerability in some Toshiba Tec's digital multi-function peripherals

https://www.toshibatec.com/information/20260731_01.html
generic

弊社複合機における複数のセキュリティ脆弱性について｜製品セキュリティアドバイザリ｜製品セキュリティ：シャープ株式会社

https://corporate.jp.sharp/info/product-security/advisory-list/2026-004/
generic

Product Security Advisory

https://global.sharp/corporate/info/product-security/advisory-list/2026-004/

Vendor Advisories for CVE-2026-63563(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 16× in last 7d / 73× 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 130 total refreshes for this CVE.

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

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 PoCredr0nin/CVE-2026-63563
    First seen Jul 31, 2026

    Unauthenticated Address Book Modification on Sharp MX/BP Multifunction Printers

    Open source ↗

Frequently asked(5)

What is CVE-2026-63563?
CVE-2026-63563 is a medium vulnerability published on August 3, 2026. Sharp and Toshiba Tec MFPs (multifunction printers) for a certain market have been shipped with the user authentication feature disabled in the initial configuration. When used with the initial configuration, the address book editing and a range of features related to Document Filing can be…
When was CVE-2026-63563 disclosed?
CVE-2026-63563 was first published in the National Vulnerability Database on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63563 actively exploited?
CVE-2026-63563 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.8% of all scored CVEs.
What is the CVSS score of CVE-2026-63563?
CVE-2026-63563 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-63563?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63563, 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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