CVE-2026-53195

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

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

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()

build_i2c_fw_hdr() allocates a fixed-size buffer of (16*1024 - 512) + sizeof(struct ti_i2c_firmware_rec) bytes, then copies le16_to_cpu(img_header->Length) bytes into it without validating that Length fits within the available space after the firmware record header.

img_header->Length is a __le16 from the firmware file and can be up to 65535. check_fw_sanity() validates the total firmware size but not img_header->Length specifically.

Fix by rejecting images where img_header->Length exceeds the available destination space.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 6, 2026

Advisory Details (8)

Auto-updated Jul 6, 2026
No patch confirmed yet.
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b7faf660eefa2047ebc2959ff76da2b6eae2e9e3
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a79b634ee58786ca627268daefa7744f2af2e14
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4cb722747ed25971f35cc47ce5c0e79d7f717713
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3e187152f44d76d7633a3855ffd0099e1588b82a
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2fd64bf0ad66ab5de0c73524591d879427ba5aba
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/294692d3296eee3391c348d7ea6401916d27806c
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/130d6567eb148040eed1b73e1414ad6c27d22bd5
generic

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226ae

Vendor Advisories for CVE-2026-53195(2)

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

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (145 versions)7.0.13-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 82× 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 273 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53195?
CVE-2026-53195 is a high vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: USB: serial: ioti: fix heap overflow in buildi2cfwhdr() buildi2cfw_hdr() allocates a fixed-size buffer of (16*1024 - 512) + sizeof(struct tii2cfirmware_rec) bytes, then copies le16tocpu(img_header->Length) bytes into it without…
When was CVE-2026-53195 disclosed?
CVE-2026-53195 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53195 actively exploited?
CVE-2026-53195 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 96.1% of all scored CVEs.
What is the CVSS score of CVE-2026-53195?
CVE-2026-53195 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-53195?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53195, 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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