CVE-2026-40195

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% 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
Elevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage bucket feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the parsed backup configuration without first verifying that the configuration object was initialized. A malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during bucket import operations and terminates the daemon. Repeated use of this issue can be used to keep Incus offline, causing a denial of service. This issue is fixed in version 7.0.0.

CVSS v3
6.5
EG Score
6.5(medium)
EPSS
32.0%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 7, 2026

Advisory Details (1)

Auto-updated May 6, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Nil-Pointer Dereference Panic via Bucket Metadata · Advisory · lxc/incus · GitHub

https://github.com/lxc/incus/security/advisories/GHSA-gc7j-g665-rxr9

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/lxc/incus/v6/cmd/incusd—7.0.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× 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.

  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-09 19:10 UTCEPSS rescore
  4. 2026-07-08 15:15 UTCEPSS rescore
  5. 2026-07-07 13:46 UTCEPSS rescore
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  11. 2026-07-04 06:31 UTCEPSS rescore
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  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-28 14:07 UTCEPSS rescore
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-26 23:06 UTCEG score recompute
  19. 2026-06-25 13:49 UTCEPSS rescore
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  21. 2026-06-24 14:05 UTCEPSS rescore
  22. 2026-06-23 21:33 UTCEPSS rescore
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  25. 2026-06-21 14:56 UTCEPSS rescore
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  1. 2026-06-21 14:56 UTCEPSS rescore
  2. 2026-06-21 01:59 UTCEPSS rescore
  3. 2026-06-19 19:25 UTCEPSS rescore
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  8. 2026-06-15 17:49 UTCEPSS rescore
  9. 2026-06-14 07:14 UTCEG score recompute
  10. 2026-06-13 23:00 UTCEPSS rescore
  11. 2026-06-12 23:12 UTCEPSS rescore
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  13. 2026-06-12 06:32 UTCEG score recompute
  14. 2026-06-11 14:00 UTCEPSS rescore
  15. 2026-06-11 04:30 UTCEG score recompute
  16. 2026-06-10 22:18 UTCEPSS rescore
  17. 2026-06-10 13:22 UTCEPSS rescore
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  19. 2026-06-10 01:47 UTCEG score recompute
  20. 2026-06-08 23:45 UTCEG score recompute
  21. 2026-06-08 14:17 UTCEPSS rescore
  22. 2026-06-08 14:17 UTCEPSS rescore
  23. 2026-06-07 21:42 UTCEG score recompute
  24. 2026-06-07 15:25 UTCEPSS rescore
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  26. 2026-06-06 19:40 UTCEG score recompute
  27. 2026-06-06 13:47 UTCEPSS rescore
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  29. 2026-06-05 22:47 UTCEPSS rescore
  30. 2026-06-05 22:47 UTCEPSS rescore
  31. 2026-06-05 17:37 UTCEG score recompute
  32. 2026-06-05 06:10 UTCEPSS rescore
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  34. 2026-06-04 15:35 UTCEG score recompute
  35. 2026-06-04 13:12 UTCEPSS rescore
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  37. 2026-06-03 13:32 UTCEG score recompute
  38. 2026-06-02 20:13 UTCEPSS rescore
  39. 2026-06-02 11:18 UTCEG score recompute
  40. 2026-06-01 13:52 UTCEPSS rescore
  41. 2026-06-01 13:52 UTCEPSS rescore
  42. 2026-06-01 13:51 UTCEPSS rescore
  43. 2026-06-01 09:16 UTCEG score recompute
  44. 2026-05-31 22:30 UTCEPSS rescore
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  46. 2026-05-31 00:16 UTCEPSS rescore
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  49. 2026-05-29 13:44 UTCEPSS rescore
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  51. 2026-05-28 13:44 UTCEPSS rescore
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  54. 2026-05-27 13:40 UTCEPSS rescore
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  57. 2026-05-26 13:44 UTCEPSS rescore
  58. 2026-05-26 07:18 UTCEPSS rescore
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  60. 2026-05-23 00:08 UTCEG score recompute
  61. 2026-05-20 22:38 UTCEPSS rescore
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  63. 2026-05-20 14:00 UTCEG score recompute
  64. 2026-05-20 11:22 UTCEPSS rescore
  65. 2026-05-20 11:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40195?
CVE-2026-40195 is a medium vulnerability published on May 6, 2026. Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage bucket feature to cause the Incus daemon to crash. The vulnerability is present in the backup…
When was CVE-2026-40195 disclosed?
CVE-2026-40195 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40195 actively exploited?
CVE-2026-40195 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40195?
CVE-2026-40195 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-40195?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40195, 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.

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