CVE-2026-47328

MEDIUMPre-NVD 6.16.1
EchelonGraph scoreMEDIUM confidence

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

Score 6.1 from GitHub Security Advisory published 2026-05-28. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
6.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity61% × 45%
Impact severity (EG Severity): CVSS 6.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (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
0.1%
EPSS %ILE
2nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.1): severity, escalated by confirmed exploitation. This CVE's 6.1 is its impact severity (EG Severity), not escalated.

EG Severity
6.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). 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

May 28, 2026

Last Modified

June 9, 2026

Advisory Details (1)

Auto-updated May 29, 2026
Patch available.

Vendor Advisories for CVE-2026-47328(1)

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

Patch Availability(11)

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(11)

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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.

Showing the most recent 100 of 240 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 140 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-18 03:36 UTCEG score recompute
  4. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-12 16:02 UTCEG score recompute
  11. 2026-10-11 19:44 UTCEG score recompute
  12. 2026-10-11 16:59 UTCEG score recompute
  13. 2026-10-11 14:24 UTCEG score recompute
  14. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-09-23 17:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-09-16 14:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-09-16 05:15 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-09-14 06:39 UTCEG score recompute
  7. 2026-09-14 06:39 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-09-11 14:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-09-11 09:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-09-10 09:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-09-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-09-01 13:54 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-08-30 01:22 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-08-28 21:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-08-25 04:39 UTCEG score recompute
  21. 2026-08-25 04:39 UTCVendor advisory
  22. 2026-08-25 04:39 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  23. 2026-08-23 14:27 UTCEG score recompute
  24. 2026-08-23 14:27 UTCVendor advisory
  25. 2026-08-23 14:27 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  26. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  27. 2026-08-21 23:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  28. 2026-08-21 15:24 UTCEG score recompute
  29. 2026-08-21 15:24 UTCVendor advisory
  30. 2026-08-21 15:24 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  31. 2026-08-20 22:55 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  32. 2026-08-20 10:44 UTCEG score recompute
  33. 2026-08-20 10:44 UTCVendor advisory
  34. 2026-08-20 10:43 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  35. 2026-08-19 17:04 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  36. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  37. 2026-08-17 07:57 UTCEG score recompute
  38. 2026-08-17 07:57 UTCVendor advisory
  39. 2026-08-17 07:57 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  40. 2026-08-16 14:56 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  41. 2026-08-16 02:33 UTCEG score recompute
  42. 2026-08-16 02:33 UTCVendor advisory
  43. 2026-08-16 02:33 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  44. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  45. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  46. 2026-08-15 00:43 UTCVendor advisory
  47. 2026-08-15 00:43 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  48. 2026-08-14 00:57 UTCVendor advisory
  49. 2026-08-14 00:57 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  50. 2026-08-12 23:35 UTCVendor advisory
  51. 2026-08-12 23:35 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  52. 2026-08-11 23:49 UTCVendor advisory
  53. 2026-08-11 23:49 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  54. 2026-08-11 00:03 UTCVendor advisory
  55. 2026-08-11 00:03 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  56. 2026-08-09 23:22 UTCVendor advisory
  57. 2026-08-09 23:22 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  58. 2026-08-08 23:36 UTCEG score recompute
  59. 2026-08-08 23:36 UTCVendor advisory
  60. 2026-08-08 23:36 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  61. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  62. 2026-08-07 23:50 UTCEG score recompute
  63. 2026-08-07 23:50 UTCVendor advisory
  64. 2026-08-07 23:50 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  65. 2026-08-07 00:04 UTCEG score recompute
  66. 2026-08-07 00:04 UTCVendor advisory
  67. 2026-08-07 00:04 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  68. 2026-08-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  69. 2026-08-05 23:26 UTCEG score recompute
  70. 2026-08-05 23:26 UTCVendor advisory
  71. 2026-08-05 23:26 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1
  72. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  73. 2026-08-04 23:40 UTCEG score recompute
  74. 2026-08-04 23:40 UTCVendor advisory
  75. 2026-08-04 23:40 UTCGHSA enrichmentGHSA-5x7q-wm95-r63c · GitHub CVSS 6.1

Frequently asked(5)

What is CVE-2026-47328?
CVE-2026-47328 is a medium-severity vulnerability; its CVE record was published on May 28, 2026. Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata…
When was the CVE record for CVE-2026-47328 published?
The CVE record for CVE-2026-47328 was published on May 28, 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 June 9, 2026; the record at its source may have been updated since.
Is CVE-2026-47328 actively exploited?
CVE-2026-47328 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47328?
CVE-2026-47328 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47328?
A fix for CVE-2026-47328 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47328 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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