IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can read and write arbitrary regions of host system memory, giving full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.
CVE-2026-16933
HIGHPre-NVD 8.28.2—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. a secondary CVSS source baseline 8.2; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.2
- EG Score
- 8.2(high)
- EG Risk
- 41(Track)EG Risk 41/100SSVC: 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 computedSeverity82% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 3%
- KEV
- Not listed
Published
August 19, 2026
Last Modified
August 20, 2026
Advisory Details (1)
Auto-updated Aug 19, 2026No patch confirmed yet.
generic
Security Bulletin: This Power System update is being released to address CVE-2026-16933
https://www.ibm.com/support/pages/node/7283216Vendor Advisories for CVE-2026-16933(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 9× 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.
- 2026-08-21 01:45 UTCEG score recompute
- 2026-08-21 01:45 UTCGHSA enrichment
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 13:26 UTCGHSA enrichment
- 2026-08-20 08:38 UTCEG score recompute
- 2026-08-20 08:38 UTCGHSA enrichment
- 2026-08-19 20:22 UTCEG score recompute
- 2026-08-19 19:18 UTCEG score recompute
- 2026-08-19 19:17 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-190
Frequently asked(5)
What is CVE-2026-16933?
CVE-2026-16933 is a high vulnerability published on August 19, 2026. IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An…
When was CVE-2026-16933 disclosed?
CVE-2026-16933 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16933 actively exploited?
CVE-2026-16933 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 97.5% of all scored CVEs.
What is the CVSS score of CVE-2026-16933?
CVE-2026-16933 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-16933?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16933, 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.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-16933
Is Your Infrastructure Affected by CVE-2026-16933?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.