CVE-2026-63900

UNRATEDCVSS · not yet scoredTrending — 5 sources updated this week

Also known asEUVD-2026-45673 (ENISA EUVD) · GHSA-46q2-6xm2-q797 (GitHub Security Advisories)Source: ENISA EUVD

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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

USB: serial: keyspan: fix missing indat transfer sanity check

Add the missing sanity check on the size of usa49wg indat transfers to avoid parsing stale or uninitialised slab data.

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

EG Severity
Not assessed: no CVSS publishedA missing CVSS is not a severity of zero.
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
No SSVC decision: EchelonGraph has not assessed this CVECISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the BOD 26-04 block below.

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 19, 2026

Last Modified

July 27, 2026

References (8)

Vendor Advisories for CVE-2026-63900(1)

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

Patch Availability(20)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-10-29ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-10-29ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-10-29ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1118.128~20.04.1) @ focal2026-10-29ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-10-29ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1114.120~20.04.1) @ focal2026-10-29ubuntu
ubuntulinux-tools-gcp-lts-22.04 (5.15.0.1118.115) @ jammy2026-10-29ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-10-29ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1080 (5.15.0-1080.84) @ jammy2026-10-29ubuntu
ubuntulinux-tools-azure-edge (7.0.0-1014.14~24.04.1) @ noble2026-10-29ubuntu
ubuntulinux-tools-oracle-edge (7.0.0-1011.11~24.04.1) @ noble2026-10-29ubuntu
ubuntulinux-virtual-6.8 (6.8.0-146.146) @ noble2026-10-29ubuntu
ubuntulinux-tools-ibm-edge (6.8.0-1066.67~22.04.1) @ jammy2026-10-29ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1070.78+fips1) @ noble2026-10-29ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1070.78) @ noble2026-10-29ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1063.66) @ noble2026-10-29ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1112.112) @ jammy2026-10-29ubuntu
ubuntulinux-tools-gcp-lts-24.04 (6.8.0-1070.78) @ noble2026-10-29ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-10-29ubuntu
linuxKernel @ 5.10.259 (fixes >=2.6.23)—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)
  • every version up to 5.10.259-1: fixed in 5.10.259-1
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Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)
  • every version up to 6.1.176-1: fixed in 6.1.176-1
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Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)
  • every version up to 6.12.94-1: fixed in 6.12.94-1
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Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (142 versions)
  • every version up to 7.0.12-1: fixed in 7.0.12-1
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All Vendor Advisories

(19)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 43× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 145 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 45 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 17:13 UTCEG score recompute
  2. 2026-10-29 17:13 UTCVendor advisory
  3. 2026-10-29 17:12 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  7. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-10-25 14:13 UTCEG score recompute
  10. 2026-10-25 02:55 UTCOSV refresh
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-10-18 03:23 UTCEG score recompute
  19. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  20. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  21. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-12 15:48 UTCEG score recompute
Show 75 more
  1. 2026-10-11 19:33 UTCEG score recompute
  2. 2026-10-11 16:48 UTCEG score recompute
  3. 2026-10-11 14:09 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-10-01 12:34 UTCEG score recompute
  16. 2026-10-01 12:34 UTCVendor advisory
  17. 2026-10-01 12:33 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-28 07:32 UTCVendor advisory
  21. 2026-09-28 07:32 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  23. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-09-23 02:10 UTCVendor advisory
  25. 2026-09-23 02:10 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  26. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  27. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  28. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  29. 2026-09-16 13:07 UTCVendor advisory
  30. 2026-09-16 13:07 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  31. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  32. 2026-09-11 19:41 UTCVendor advisory
  33. 2026-09-11 19:41 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  34. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  35. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  36. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  37. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  38. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  39. 2026-09-05 20:11 UTCVendor advisory
  40. 2026-09-05 20:10 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  41. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  42. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  43. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  44. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  47. 2026-08-30 02:58 UTCVendor advisory
  48. 2026-08-30 02:58 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  49. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  50. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  51. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  52. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  53. 2026-08-25 14:32 UTCVendor advisory
  54. 2026-08-25 14:32 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  55. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  56. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  57. 2026-08-22 09:31 UTCVendor advisory
  58. 2026-08-22 09:31 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  59. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  60. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  61. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  62. 2026-08-19 04:35 UTCVendor advisory
  63. 2026-08-19 04:35 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  64. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  65. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  66. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  67. 2026-08-15 23:23 UTCVendor advisory
  68. 2026-08-15 23:23 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  69. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  70. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  71. 2026-08-12 18:27 UTCVendor advisory
  72. 2026-08-12 18:27 UTCGHSA enrichmentGHSA-46q2-6xm2-q797
  73. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  74. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  75. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2026-63900?
CVE-2026-63900 is a vulnerability whose severity is not yet rated; its CVE record was published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan: fix missing indat transfer sanity check Add the missing sanity check on the size of usa49wg indat transfers to avoid parsing stale or uninitialised slab data.
When was the CVE record for CVE-2026-63900 published?
The CVE record for CVE-2026-63900 was published on July 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 27, 2026; the record at its source may have been updated since.
Is CVE-2026-63900 actively exploited?
CVE-2026-63900 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-63900?
A fix for CVE-2026-63900 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-63900 are linked in the Vendor Advisories panel on this page.

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