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: 0.4%CVSS: 6.5Exploit: Elevated riskExposed services: Not assessed

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

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
6.5MEDIUMmedium confidence
EG Risk
60
EG Risk 60/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
35th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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 13× in last 7d / 64× 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 161 total refreshes for this CVE.

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

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 ↗

Related CVEs(same CWE)

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 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 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63563?
CVE-2026-63563 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-63563?
No fix for CVE-2026-63563 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-63563 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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