CVE-2026-84270

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-09-01. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the MTP backend in gvfs. When reading a file from a mounted MTP device, do_read() in gvfsbackendmtp.c trusts the data length returned by the device without limiting it to the original size requested by the client. If a malicious MTP device responds with more bytes than requested, this unrestricted length is passed directly to memcpy(). This causes the operation to read memory outside the intended boundaries. This allows an attacker who plugs in a malicious MTP device to cause a segmentation fault when a file is read and crash the gvfsd-mtp process, resulting in a denial of service.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100CISA 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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

September 1, 2026

Last Modified

September 2, 2026

Advisory Details (3)

Auto-updated Sep 1, 2026
Patch available. Sources: redhat.
generic

Out of bounds read in gvfsbackendmtp.c do_read() (#864) · Issues · GNOME / gvfs · GitLab

https://gitlab.gnome.org/GNOME/gvfs/-/issues/864
redhat

Bug Access Denied

https://bugzilla.redhat.com/show_bug.cgi?id=2526794
redhatMentions a patch (unverified)

CVE-2026-84270 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-84270

Vendor Advisories for CVE-2026-84270(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gvfs1.50.3-1 ... 1.62.0-3 (42 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gvfs1.57.2-2 ... 1.62.0-3 (14 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gvfs1.57.2-2 ... 1.60.0-2 (10 versions)
  • every version up to 1.62.0-1: fixed in 1.62.0-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 81× 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 107 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-84270?
CVE-2026-84270 is a medium vulnerability published on September 1, 2026. A flaw was found in the MTP backend in gvfs. When reading a file from a mounted MTP device, do_read() in gvfsbackendmtp.c trusts the data length returned by the device without limiting it to the original size requested by the client. If a malicious MTP device responds with more bytes than…
When was CVE-2026-84270 disclosed?
CVE-2026-84270 was first published on September 1, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84270 actively exploited?
CVE-2026-84270 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-84270?
CVE-2026-84270 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-84270?
A fix for CVE-2026-84270 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-84270 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-84270

Explore →

Is Your Infrastructure Affected by CVE-2026-84270?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs