CVE-2026-44210

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.9Exploit: Elevated riskExposed: 0

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

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Versions prior to 3.31.0 ship with a default configuration that allows pod creators to inject arbitrary command-line arguments into the virtiofsd process through the io.katacontainers.config.hypervisor.virtio_fs_extra_args pod annotation. By injecting -o source=/ along with --no-announce-submounts and --sandbox=none, an attacker can override the virtiofsd shared directory to serve the entire host root filesystem into the guest VM. Combined with the kernel_params annotation (also enabled by default) to activate the agent debug console, the attacker can mount the host filesystem from inside the VM and read or write any file on the host, including /etc/shadow. Version 3.31.0 patches the issue.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
76(Attend)
EG Risk 76/100SSVC: Attend

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
Severity99% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

May 26, 2026

Last Modified

August 6, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github Patch Available🟡 PoC Available

VM Escape via virtiofsd Argument Injection through Default-Enabled Pod Annotations · Advisory · kata-containers/kata-containers · GitHub

https://github.com/kata-containers/kata-containers/security/advisories/GHSA-rr59-xxvx-96qr
github_commit

commit ffa59ce3aa78 (kata-containers/kata-containers)

Fix landed in kata-containers/kata-containers commit ffa59ce3aa78 — awaiting tagged release

https://github.com/kata-containers/kata-containers/commit/ffa59ce3aa7877d067c9a372df0c329a23a01744

Vendor Advisories for CVE-2026-44210(2)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/kata-containers/kata-containers—0.0.0-20260519062212-ffa59ce3aa78—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 37× 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 120 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 19:31 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-14 09:34 UTCEG score recompute
  6. 2026-09-14 09:34 UTCVendor advisory
  7. 2026-09-13 16:47 UTCEPSS rescore
  8. 2026-09-12 15:01 UTCEPSS rescore
  9. 2026-09-11 20:10 UTCOSV refresh
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 09:37 UTCEPSS rescore
  12. 2026-09-10 09:34 UTCEPSS rescore
  13. 2026-09-08 22:00 UTCEPSS rescore
  14. 2026-09-07 16:01 UTCEPSS rescore
  15. 2026-09-06 13:47 UTCEPSS rescore
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 13:54 UTCEPSS rescore
  19. 2026-08-30 19:17 UTCEPSS rescore
  20. 2026-08-30 01:22 UTCEPSS rescore
  21. 2026-08-28 21:41 UTCEPSS rescore
  22. 2026-08-27 14:25 UTCEPSS rescore
  23. 2026-08-26 14:46 UTCEPSS rescore
  24. 2026-08-25 13:49 UTCEPSS rescore
  25. 2026-08-23 23:59 UTCVendor advisory
Show 75 more
  1. 2026-08-23 19:36 UTCVendor advisory
  2. 2026-08-23 15:54 UTCEG score recompute
  3. 2026-08-23 15:54 UTCVendor advisory
  4. 2026-08-23 00:19 UTCEPSS rescore
  5. 2026-08-22 01:06 UTCEG score recompute
  6. 2026-08-22 01:06 UTCVendor advisory
  7. 2026-08-21 23:49 UTCEPSS rescore
  8. 2026-08-21 21:18 UTCEG score recompute
  9. 2026-08-20 22:55 UTCEPSS rescore
  10. 2026-08-20 21:38 UTCVendor advisory
  11. 2026-08-20 17:56 UTCEG score recompute
  12. 2026-08-20 17:56 UTCVendor advisory
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-18 13:48 UTCEPSS rescore
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 13:11 UTCVendor advisory
  17. 2026-08-17 09:29 UTCVendor advisory
  18. 2026-08-16 16:29 UTCEG score recompute
  19. 2026-08-16 16:29 UTCVendor advisory
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 10:24 UTCVendor advisory
  22. 2026-08-16 06:42 UTCVendor advisory
  23. 2026-08-16 03:01 UTCEG score recompute
  24. 2026-08-16 03:01 UTCVendor advisory
  25. 2026-08-16 02:14 UTCEPSS rescore
  26. 2026-08-15 01:30 UTCEPSS rescore
  27. 2026-08-15 00:15 UTCVendor advisory
  28. 2026-08-14 20:33 UTCVendor advisory
  29. 2026-08-14 16:42 UTCVendor advisory
  30. 2026-08-14 12:45 UTCVendor advisory
  31. 2026-08-14 05:21 UTCVendor advisory
  32. 2026-08-14 01:39 UTCEG score recompute
  33. 2026-08-14 01:39 UTCVendor advisory
  34. 2026-08-13 22:00 UTCEPSS rescore
  35. 2026-08-13 08:26 UTCVendor advisory
  36. 2026-08-12 17:37 UTCVendor advisory
  37. 2026-08-12 13:55 UTCEG score recompute
  38. 2026-08-12 13:55 UTCVendor advisory
  39. 2026-08-12 13:51 UTCEPSS rescore
  40. 2026-08-12 09:39 UTCVendor advisory
  41. 2026-08-12 01:59 UTCVendor advisory
  42. 2026-08-11 22:17 UTCVendor advisory
  43. 2026-08-11 18:33 UTCEG score recompute
  44. 2026-08-11 18:33 UTCVendor advisory
  45. 2026-08-11 13:43 UTCEPSS rescore
  46. 2026-08-11 13:39 UTCVendor advisory
  47. 2026-08-11 07:42 UTCVendor advisory
  48. 2026-08-11 04:00 UTCVendor advisory
  49. 2026-08-11 00:19 UTCEG score recompute
  50. 2026-08-11 00:19 UTCVendor advisory
  51. 2026-08-11 00:00 UTCEPSS rescore
  52. 2026-08-09 14:06 UTCEG score recompute
  53. 2026-08-09 14:06 UTCVendor advisory
  54. 2026-08-09 13:46 UTCEPSS rescore
  55. 2026-08-09 10:24 UTCVendor advisory
  56. 2026-08-09 02:49 UTCVendor advisory
  57. 2026-08-08 23:07 UTCEG score recompute
  58. 2026-08-08 23:07 UTCVendor advisory
  59. 2026-08-08 16:37 UTCEPSS rescore
  60. 2026-08-08 14:04 UTCVendor advisory
  61. 2026-08-08 10:22 UTCVendor advisory
  62. 2026-08-08 06:40 UTCVendor advisory
  63. 2026-08-08 02:58 UTCVendor advisory
  64. 2026-08-07 23:16 UTCVendor advisory
  65. 2026-08-07 19:34 UTCEG score recompute
  66. 2026-08-06 16:43 UTCEG score recompute
  67. 2026-08-06 13:46 UTCEPSS rescore
  68. 2026-08-06 01:00 UTCEG score recompute▲ 4.10
  69. 2026-08-06 01:00 UTCNVD updateCVSS v3 → 9.9 · severity → CRITICAL
  70. 2026-08-05 21:00 UTCEG score recompute
  71. 2026-08-05 19:17 UTCEPSS rescore
  72. 2026-08-04 15:10 UTCEPSS rescore
  73. 2026-08-04 10:38 UTCEPSS rescore
  74. 2026-08-03 16:38 UTCEG score recompute
  75. 2026-08-03 10:36 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-44210?
CVE-2026-44210 is a critical vulnerability published on May 26, 2026. Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Versions prior to 3.31.0 ship with a default configuration that allows pod creators to inject arbitrary command-line arguments into the virtiofsd…
When was CVE-2026-44210 disclosed?
CVE-2026-44210 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44210 actively exploited?
CVE-2026-44210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.0% of all scored CVEs.
What is the CVSS score of CVE-2026-44210?
CVE-2026-44210 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-44210?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44210, 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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