CVE-2023-30438

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: HIGH) published 2023-05-17. NVD baseline CVSS 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

An internally discovered vulnerability in PowerVM on IBM Power9 and Power10 systems could allow an attacker with privileged user access to a logical partition to perform an undetected violation of the isolation between logical partitions which could lead to data leakage or the execution of arbitrary code in other logical partitions on the same physical server. IBM X-Force ID: 252706.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

May 17, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Sep 7, 2026
No patch confirmed yet.
generic

Security Bulletin: This Power System update is being released to address CVE 2023-30438

https://www.ibm.com/support/pages/node/6993021
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/252706

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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 154 total refreshes for this CVE.

  1. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
  3. 2026-09-05 15:25 UTCEPSS rescore
  4. 2026-09-04 13:58 UTCEPSS rescore
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  24. 2026-08-12 13:48 UTCEPSS rescore
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  1. 2026-08-09 13:44 UTCEPSS rescore
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  19. 2026-07-27 14:10 UTCEPSS rescore
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  22. 2026-07-25 14:16 UTCEPSS rescore
  23. 2026-07-24 14:15 UTCEPSS rescore
  24. 2026-07-23 14:16 UTCEPSS rescore
  25. 2026-07-23 14:16 UTCEPSS rescore
  26. 2026-07-23 02:21 UTCEG score recompute
  27. 2026-07-22 23:09 UTCEG score recompute
  28. 2026-07-22 14:06 UTCEPSS rescore
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  30. 2026-07-21 15:23 UTCEPSS rescore
  31. 2026-07-20 17:06 UTCEPSS rescore
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  38. 2026-07-16 17:01 UTCEPSS rescore
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  40. 2026-07-15 16:56 UTCEPSS rescore
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  42. 2026-07-15 01:58 UTCEPSS rescore
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  44. 2026-07-13 22:28 UTCEPSS rescore
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  46. 2026-07-13 06:11 UTCEPSS rescore
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  48. 2026-07-12 05:45 UTCEPSS rescore
  49. 2026-07-11 08:25 UTCEPSS rescore
  50. 2026-07-11 08:25 UTCEPSS rescore
  51. 2026-07-09 19:08 UTCEPSS rescore
  52. 2026-07-09 19:08 UTCEPSS rescore
  53. 2026-07-08 15:13 UTCEPSS rescore
  54. 2026-07-07 13:44 UTCEPSS rescore
  55. 2026-07-06 16:26 UTCEPSS rescore
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  57. 2026-07-05 02:28 UTCEPSS rescore
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  59. 2026-07-02 16:59 UTCEPSS rescore
  60. 2026-07-01 15:04 UTCEPSS rescore
  61. 2026-06-30 23:21 UTCEPSS rescore
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  63. 2026-06-29 14:05 UTCEPSS rescore
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  66. 2026-06-28 04:54 UTCEPSS rescore
  67. 2026-06-27 03:07 UTCEPSS rescore
  68. 2026-06-25 13:48 UTCEPSS rescore
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  72. 2026-06-23 21:31 UTCEPSS rescore
  73. 2026-06-23 21:31 UTCEPSS rescore
  74. 2026-06-22 14:24 UTCEPSS rescore
  75. 2026-06-22 14:24 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-30438?
CVE-2023-30438 is a critical vulnerability published on May 17, 2023. An internally discovered vulnerability in PowerVM on IBM Power9 and Power10 systems could allow an attacker with privileged user access to a logical partition to perform an undetected violation of the isolation between logical partitions which could lead to data leakage or the execution of…
When was CVE-2023-30438 disclosed?
CVE-2023-30438 was first published in the National Vulnerability Database on May 17, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-30438 actively exploited?
CVE-2023-30438 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 85.5% of all scored CVEs.
What is the CVSS score of CVE-2023-30438?
CVE-2023-30438 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2023-30438?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30438, 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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