CVE-2026-49237

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 96% 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 week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

An issue was discovered in Canonical Multipass for macOS before version 1.16.3 due to an incomplete fix for CVE-2025-5199. While the patch in version 1.16.0 updated the ownership of the multipassd daemon binary to root:wheel, five co-located binaries (multipass, qemu-img, qemu-system-aarch64, qemu-system-x86_64, and sshfs_server) in /Library/Application Support/com.canonical.multipass/bin/ retain ownership by the installing user and remain writable. Because the root LaunchDaemon (com.canonical.multipassd.plist) configures a PATH environment variable that prioritizes this user-writable directory and invokes these auxiliary binaries by their bare names, a local attacker can replace an auxiliary binary (such as qemu-img) with a malicious wrapper. When the root daemon subsequently triggers the binary during routine execution (e.g., via multipass launch), the malicious code executes with root privileges, leading to local privilege escalation.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 1, 2026

Advisory Details (1)

Auto-updated May 28, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Local Privilege Escalation via Writable PATH Binaries · Advisory · canonical/multipass · GitHub

https://github.com/canonical/multipass/security/advisories/GHSA-r2xg-x32f-23c5

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 28× 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 137 total refreshes for this CVE.

  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-14 06:48 UTCEG score recompute
  3. 2026-09-13 16:47 UTCEPSS rescore
  4. 2026-09-13 02:39 UTCOSV refresh
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  19. 2026-08-25 04:45 UTCEG score recompute
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  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-20 10:46 UTCEG score recompute
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  1. 2026-08-19 17:04 UTCEPSS rescore
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  4. 2026-08-16 15:33 UTCEG score recompute
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 02:35 UTCEG score recompute
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  23. 2026-08-06 13:47 UTCEPSS rescore
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  25. 2026-08-05 19:17 UTCEPSS rescore
  26. 2026-08-04 23:46 UTCEG score recompute
  27. 2026-08-04 10:39 UTCEPSS rescore
  28. 2026-08-03 16:11 UTCEG score recompute
  29. 2026-08-03 10:36 UTCEPSS rescore
  30. 2026-08-02 03:33 UTCEG score recompute
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  33. 2026-08-01 04:16 UTCEPSS rescore
  34. 2026-07-31 06:21 UTCEG score recompute
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  39. 2026-07-27 09:41 UTCEG score recompute
  40. 2026-07-26 14:54 UTCEPSS rescore
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  43. 2026-07-23 14:18 UTCEPSS rescore
  44. 2026-07-23 03:18 UTCEG score recompute
  45. 2026-07-22 14:08 UTCEPSS rescore
  46. 2026-07-21 15:25 UTCEPSS rescore
  47. 2026-07-20 17:08 UTCEPSS rescore
  48. 2026-07-19 14:31 UTCEPSS rescore
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  50. 2026-07-19 02:29 UTCEPSS rescore
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  71. 2026-06-27 03:08 UTCEPSS rescore
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  74. 2026-06-23 21:33 UTCEPSS rescore
  75. 2026-06-23 21:33 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-49237?
CVE-2026-49237 is a high vulnerability published on May 28, 2026. An issue was discovered in Canonical Multipass for macOS before version 1.16.3 due to an incomplete fix for CVE-2025-5199. While the patch in version 1.16.0 updated the ownership of the multipassd daemon binary to root:wheel, five co-located binaries (multipass, qemu-img, qemu-system-aarch64,…
When was CVE-2026-49237 disclosed?
CVE-2026-49237 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49237 actively exploited?
CVE-2026-49237 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.2% of all scored CVEs.
What is the CVSS score of CVE-2026-49237?
CVE-2026-49237 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-49237?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49237, 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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