When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays without enforcing boundary checks on the maximum allowable number of elements. An authenticated administrator can exploit this vulnerability via crafted REST API requests containing an excessive number of list delimiters, causing heap corruption that can result in service crash or arbitrary code execution.
CVE-2026-87679
HIGHPre-NVD 8.58.5—Trending — 4 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (4th percentile of EPSS-scored CVEs). 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, secondary
8.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.5Exploit: None knownExposed services: Not assessed
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 8.5
- EG Score
- 8.5HIGHmedium confidence
- EG Risk
- 38EG Risk 38/100
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)Severity85% × 45%The EG Score, 8.5 of 10.Exploitation0% × 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 low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix. - EPSS PROB
- 0.2%
- EPSS %ILE
- 4th
- KEV
- Not listed
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 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 total (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
October 8, 2026
Last Modified
October 8, 2026
Advisory Details (1)
Auto-updated Oct 8, 2026No fix on record yet.
generic
Support Content Notification - Support Portal - Broadcom support portal
https://support.broadcom.com/external/content/SecurityAdvisories/0/39073Vendor Advisories for CVE-2026-87679(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 22× in last 7d / 22× 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.
- 2026-10-11 16:33 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 4th percentile
- 2026-10-11 13:49 UTCEG score recompute
- 2026-10-11 06:47 UTCEG score recompute
- 2026-10-11 06:47 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 4th percentile
- 2026-10-10 19:06 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-10 07:23 UTCEG score recompute
- 2026-10-10 07:23 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 4th percentile
- 2026-10-09 19:40 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-09 07:59 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-08 20:17 UTCEG score recompute
- 2026-10-08 20:17 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 4th percentile
- 2026-10-08 13:43 UTCEG score recompute
- 2026-10-08 13:42 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-08 13:17 UTCEG score recompute
- 2026-10-08 13:16 UTCGHSA enrichmentGHSA-m9v3-m696-8866 · GitHub severity HIGH
- 2026-10-08 01:32 UTCEG score recompute
- 2026-10-08 01:03 UTCEG score recompute
- 2026-10-08 01:01 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-87679?
CVE-2026-87679 is a high-severity vulnerability; its CVE record was published on October 8, 2026. When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays without enforcing boundary checks on the maximum allowable number of elements. An authenticated administrator can exploit…
When was the CVE record for CVE-2026-87679 published?
The CVE record for CVE-2026-87679 was published on October 8, 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 October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-87679 actively exploited?
CVE-2026-87679 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-87679?
CVE-2026-87679 has a CVSS base score of 8.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-87679?
No fix for CVE-2026-87679 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-87679 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-87679
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