CVE-2026-76464 (GCVE-0-2026-76464)
Vulnerability from cvelistv5 – Published: 2026-10-07 16:18 – Updated: 2026-10-07 18:05
VLAI
EPSS
VEX
Title
Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.
The vulnerabilities tracked by this CVE-2026-76464 are related to buffer management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-119.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 18:01 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Campus Gateway Software |
Affected:
CG 33.1.3
|
guessed | |
| Cisco | Cisco Meraki MR Wireless Access Points Software |
Affected:
MR 33.1.2
Affected: MR 30.6 Affected: MR 32.1.7 Affected: MR 32.2.3 Affected: MR 32.2.4 Affected: MR 33.1.1 |
guessed | |
| Cisco | Cisco Meraki MV Firmware |
Affected:
4.20
Affected: 5.0 Affected: 5.1 Affected: 5.2 Affected: 5.3 Affected: 5.4 Affected: 5.4.1 Affected: 5.5 Affected: 5.5.1 Affected: 5.6 Affected: 5.6.1 Affected: 6.0 Affected: 6.0.1 Affected: 5.6.2 Affected: 6.0.2 Affected: 6.1 Affected: 6.1.1 Affected: 6.1.2 Affected: 6.2 Affected: 6.2.1 Affected: 6.2.2 Affected: 6.3 Affected: 6.3.2 Affected: 2.0 Affected: 2.1 Affected: 2.2 Affected: 3.0 Affected: 3.1 Affected: 3.2 Affected: 3.3 Affected: 3.4 Affected: 3.5 Affected: 3.6 Affected: 3.7 Affected: 3.8 Affected: 3.9 Affected: 3.10 Affected: 3.11 Affected: 3.12 Affected: 3.13 Affected: 3.14 Affected: 3.15 Affected: 3.16 Affected: 3.17 Affected: 3.18 Affected: 3.19 Affected: 3.20 Affected: 3.21 Affected: 3.22 Affected: 3.23 Affected: 3.24 Affected: 3.25 Affected: 3.26 Affected: 3.27 Affected: 3.28 Affected: 3.29 Affected: 3.30 Affected: 3.31 Affected: 3.32 Affected: 3.33 Affected: 3.34 Affected: 3.35 Affected: 3.36 Affected: 4.0 Affected: 4.1 Affected: 4.2 Affected: 4.3 Affected: 4.4 Affected: 4.5 Affected: 4.6 Affected: 4.7 Affected: 4.8 Affected: 4.9 Affected: 4.10 Affected: 4.11 Affected: 4.12 Affected: 4.13 Affected: 4.14 Affected: 4.15 Affected: 4.16 Affected: 4.17 Affected: 4.18 Affected: 4.18.1 Affected: 4.19 Affected: MV 7.3 Affected: MV 7.3.1 Affected: MV 7.3.2 Affected: MV 7.2.1 Affected: MV 7.2.2 |
guessed | |
| Cisco | Cisco Meraki MX Firmware |
Affected:
16.2
Affected: 16.3 Affected: 16.4 Affected: 16.5 Affected: 16.6 Affected: 17.3 Affected: 17.6 Affected: 17.7 Affected: 17.8 Affected: 17.9 Affected: 17.10 Affected: 18.1 Affected: 18.2 Affected: 19.1 Affected: MX 18.211.2 Affected: MX 26.2.1 Affected: MX 19.2.8 Affected: MX 26.2.2 Affected: MX 26.1.4 Affected: MX 26.1.5 Affected: MX 26.1.6 |
guessed |
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"version": "3.7"
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{
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"version": "3.10"
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"version": "3.11"
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{
"status": "affected",
"version": "3.12"
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{
"status": "affected",
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{
"status": "affected",
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"version": "3.36"
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"version": "4.0"
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"status": "affected",
"version": "4.1"
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{
"status": "affected",
"version": "4.2"
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{
"status": "affected",
"version": "4.3"
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{
"status": "affected",
"version": "4.4"
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{
"status": "affected",
"version": "4.5"
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"status": "affected",
"version": "4.6"
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"status": "affected",
"version": "4.7"
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"status": "affected",
"version": "4.8"
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"version": "4.9"
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"version": "4.10"
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"version": "4.16"
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"version": "4.17"
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"version": "4.18"
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"status": "affected",
"version": "4.18.1"
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"status": "affected",
"version": "4.19"
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"status": "affected",
"version": "MV 7.3"
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"status": "affected",
"version": "MV 7.3.1"
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"status": "affected",
"version": "MV 7.3.2"
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"version": "MV 7.2.1"
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"version": "16.4"
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"version": "16.5"
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"version": "17.7"
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{
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{
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},
{
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},
{
"status": "affected",
"version": "18.1"
},
{
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"version": "18.2"
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{
"status": "affected",
"version": "19.1"
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{
"status": "affected",
"version": "MX 18.211.2"
},
{
"status": "affected",
"version": "MX 26.2.1"
},
{
"status": "affected",
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{
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{
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{
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"version": "3.34"
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{
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"version": "3.35"
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{
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"version": "3.36"
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{
"status": "affected",
"version": "4.0"
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{
"status": "affected",
"version": "4.1"
},
{
"status": "affected",
"version": "4.2"
},
{
"status": "affected",
"version": "4.3"
},
{
"status": "affected",
"version": "4.4"
},
{
"status": "affected",
"version": "4.5"
},
{
"status": "affected",
"version": "4.6"
},
{
"status": "affected",
"version": "4.7"
},
{
"status": "affected",
"version": "4.8"
},
{
"status": "affected",
"version": "4.9"
},
{
"status": "affected",
"version": "4.10"
},
{
"status": "affected",
"version": "4.11"
},
{
"status": "affected",
"version": "4.12"
},
{
"status": "affected",
"version": "4.13"
},
{
"status": "affected",
"version": "4.14"
},
{
"status": "affected",
"version": "4.15"
},
{
"status": "affected",
"version": "4.16"
},
{
"status": "affected",
"version": "4.17"
},
{
"status": "affected",
"version": "4.18"
},
{
"status": "affected",
"version": "4.18.1"
},
{
"status": "affected",
"version": "4.19"
},
{
"status": "affected",
"version": "MV 7.3"
},
{
"status": "affected",
"version": "MV 7.3.1"
},
{
"status": "affected",
"version": "MV 7.3.2"
},
{
"status": "affected",
"version": "MV 7.2.1"
},
{
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}
]
},
{
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"product": "Cisco Meraki MX Firmware",
"vendor": "Cisco",
"versions": [
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"status": "affected",
"version": "16.2"
},
{
"status": "affected",
"version": "16.3"
},
{
"status": "affected",
"version": "16.4"
},
{
"status": "affected",
"version": "16.5"
},
{
"status": "affected",
"version": "16.6"
},
{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
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{
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}
],
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}
},
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
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{
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{
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{
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{
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{
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},
{
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{
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},
{
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},
{
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}
],
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}
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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