CVE-2026-77176

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (39th percentile of EPSS-scored CVEs). 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, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

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

A flaw was found in Kata Containers. In configurations utilizing genpolicy for Confidential Containers guest protection, a malicious host operator can exploit insufficient validation of CreateContainer mount and storage rules. This allows them to mount arbitrary container-rootfs paths over sensitive host locations or provision arbitrary content, potentially exposing confidential information or enabling the acceptance of attacker-controlled input.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 20, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Aug 20, 2026
No fix on record yet. Sources: redhat, github.
githubMentions a patch (unverified)

generated policy allows mounting attacker-chosen guest paths to specific locations · Advisory · kata-containers/kata-containers · GitHub

https://github.com/kata-containers/kata-containers/security/advisories/GHSA-fmg6-v47x-52wr
redhat

2517502 – (CVE-2026-77176) CVE-2026-77176 kata-containers: Insufficient validation of CreateContainer mount and storage rules in genpolicy

https://bugzilla.redhat.com/show_bug.cgi?id=2517502
redhatMentions a patch (unverified)

CVE-2026-77176 - 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-2026-77176

Vendor Advisories for CVE-2026-77176(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 20× in last 7d / 101× 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 151 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-77176?
CVE-2026-77176 is a high vulnerability published on August 20, 2026. A flaw was found in Kata Containers. In configurations utilizing genpolicy for Confidential Containers guest protection, a malicious host operator can exploit insufficient validation of CreateContainer mount and storage rules. This allows them to mount arbitrary container-rootfs paths over…
When was CVE-2026-77176 disclosed?
CVE-2026-77176 was first published on August 20, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77176 actively exploited?
CVE-2026-77176 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77176?
CVE-2026-77176 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-77176?
No fix for CVE-2026-77176 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-2026-77176 are linked in the Vendor Advisories panel on this page.

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