CVE-2026-62313

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
4.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Incus is a system container and virtual machine manager. Prior to version 7.3.0, project-level enforcement of restricted.containers.privilege=isolated can be trivially bypassed, allowing a user to create a non-isolated (shared host idmap) container in a project that is configured to forbid them. The restriction only rejects an explicitly set security.idmap.isolated=false (or empty) and fails to enforce anything when the key is omitted entirely. Because an unset security.idmap.isolated defaults to false (non-isolation), a user simply leaves the key out and obtains exactly the container state the restriction is meant to forbid. This defeats the tenant-isolation guarantee the restriction exists to provide. Containers in the project share the host uid/gid map instead of receiving unique, non-overlapping ranges, weakening the isolation boundary between co-tenant containers and the host. Version 7.3.0 patches the issue.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 21, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Aug 21, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Project isolation restriction bypass by omitting security.idmap.isolated · Advisory · lxc/incus · GitHub

https://github.com/lxc/incus/security/advisories/GHSA-53cg-qvg7-m8vg

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
incus6.0.4-2 ... 6.0.4-2+deb13u8 (16 versions)
  • every version up to 6.0.4-2+deb13u9: fixed in 6.0.4-2+deb13u9
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
incus6.0.4-2 ... 7.0.1-2~bpo13+1 (32 versions)
  • every version up to 7.0.1-2: fixed in 7.0.1-2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  3. 2026-10-12 15:49 UTCEG score recompute
  4. 2026-10-11 19:34 UTCEG score recompute
  5. 2026-10-11 16:49 UTCEG score recompute
  6. 2026-10-11 14:11 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  10. 2026-10-09 05:57 UTCEG score recompute
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  12. 2026-10-08 04:56 UTCEG score recompute
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  14. 2026-10-07 03:19 UTCEG score recompute
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  16. 2026-10-06 03:05 UTCEG score recompute
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  19. 2026-10-03 16:43 UTCEG score recompute
  20. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  21. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  22. 2026-10-02 08:17 UTCEG score recompute
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  24. 2026-10-01 08:06 UTCEG score recompute
  25. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 27th percentile
Show 59 more
  1. 2026-09-30 07:54 UTCEG score recompute
  2. 2026-09-29 02:54 UTCEG score recompute
  3. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  4. 2026-09-28 02:42 UTCEG score recompute
  5. 2026-09-27 02:30 UTCEG score recompute
  6. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  7. 2026-09-24 22:26 UTCEG score recompute
  8. 2026-09-23 21:19 UTCEG score recompute
  9. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  10. 2026-09-22 21:08 UTCEG score recompute
  11. 2026-09-20 20:43 UTCEG score recompute
  12. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  13. 2026-09-19 20:29 UTCEG score recompute
  14. 2026-09-18 20:17 UTCEG score recompute
  15. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-09-18 03:38 UTCEG score recompute
  17. 2026-09-17 03:27 UTCEG score recompute
  18. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-16 03:09 UTCEG score recompute
  21. 2026-09-14 02:46 UTCEG score recompute
  22. 2026-09-13 02:34 UTCEG score recompute
  23. 2026-09-12 02:22 UTCEG score recompute
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  26. 2026-09-11 02:10 UTCEG score recompute
  27. 2026-09-09 01:47 UTCEG score recompute
  28. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  29. 2026-09-07 22:09 UTCEG score recompute
  30. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  31. 2026-09-06 21:58 UTCEG score recompute
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  33. 2026-09-05 21:46 UTCEG score recompute
  34. 2026-09-04 21:34 UTCEG score recompute
  35. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  36. 2026-09-02 21:04 UTCEG score recompute
  37. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  38. 2026-09-01 19:53 UTCEG score recompute
  39. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  40. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  41. 2026-08-30 19:22 UTCEG score recompute
  42. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  43. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  44. 2026-08-29 19:11 UTCEG score recompute
  45. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  46. 2026-08-27 18:42 UTCEG score recompute
  47. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-08-26 18:24 UTCEG score recompute
  49. 2026-08-26 18:08 UTCEG score recompute
  50. 2026-08-26 16:24 UTCEG score recompute
  51. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  52. 2026-08-25 16:07 UTCEG score recompute
  53. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  54. 2026-08-24 15:56 UTCEG score recompute
  55. 2026-08-23 15:43 UTCEG score recompute
  56. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  57. 2026-08-21 15:21 UTCEG score recompute
  58. 2026-08-21 14:54 UTCEG score recomputeFirst assessed: 4.3 MEDIUM
  59. 2026-08-21 14:54 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-62313?
CVE-2026-62313 is a medium-severity vulnerability; its CVE record was published on August 21, 2026. Incus is a system container and virtual machine manager. Prior to version 7.3.0, project-level enforcement of restricted.containers.privilege=isolated can be trivially bypassed, allowing a user to create a non-isolated (shared host idmap) container in a project that is configured to forbid them.…
When was the CVE record for CVE-2026-62313 published?
The CVE record for CVE-2026-62313 was published on August 21, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 18, 2026; the record at its source may have been updated since.
Is CVE-2026-62313 actively exploited?
CVE-2026-62313 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62313?
CVE-2026-62313 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-2026-62313?
A fix for CVE-2026-62313 is available: update to the fixed version the vendor names in its advisory.

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