CVE Intelligence
Critical

CVE-2024-3596 — RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.

RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response using a chosen-prefix collision attack against MD5 Response Authenticator signature.

Published Jul 9, 2024 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: certcc

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 14.9% (30-day exploitation probability)+14
  • Technical severity (critical)+10

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
14.86%
ahead of 97% of scored CVEs · Oct 15, 2026
Affects
Broadcom
Brocade Sannav and 4 more
CVSS base
9.0
Critical · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Broadcom Brocade Sannav, Broadcom Fabric Operating System, Freeradius Freeradius…).
  2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  4. EPSS ahead of 97% of scored CVEs: prioritize it in the patch queue.
  5. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Broadcom Brocade Sannav versions not specified by the source Vulnerable NIST National Vulnerability Database
Broadcom Fabric Operating System versions not specified by the source Vulnerable NIST National Vulnerability Database
Freeradius Freeradius < 3.0.27 Vulnerable NIST National Vulnerability Database
Ietf RFC version 2865 Vulnerable CVE Program (cve.org) e CISA ADP
Sonicwall Sonicos versions not specified by the source Vulnerable NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
9.0 CVSS 3.1 Critical 2.2 6.0 nvd@nist.gov via NIST National Vulnerability Database
9.0 CVSS 3.1 Critical 2.2 6.0 134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
9.0 CVSS 3.1 Critical — — GitHub, Inc. via GitHub Security Advisories
9.0 CVSS 3.1 Critical — — CISA-ADP via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-354

Other CVEs with this weakness →

EPSS over time FIRST

Oct 14, 2026 → Oct 15, 2026 · 2 reading(s) · max 14.86%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · ietf/rfc
    Oct 14, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 14, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 14, 2026
  • Affected products added · freeradius/freeradius, broadcom/brocade sannav, broadcom/fabric operating system, sonicwall/sonicos
    Oct 14, 2026 · NIST National Vulnerability Database
  • CVSS changed · 9.0
    Oct 14, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 14, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 14, 2026 · Alertas do Telegram
  • 2024
  • CVE published
    Jul 9, 2024 · certcc

Source activity

Repeated readings are counted rather than listed.

  • 2× References added · Oct 14, 2026 – Oct 14, 2026
  • 1× Official description updated · Oct 14, 2026 – Oct 14, 2026

References

18 on the record

Elsewhere on this site

Broadcom
every CVE for this vendor
CWE-354
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-5769 A vulnerability in Brocade SANnav before 3.0.1 can have the Brocade Fabric OS switch admin... 8d
  • CVE-2026-5049 A path traversal vulnerability affects the The Zone Alias Import flow feature in Brocade SANnav... 8d
  • CVE-2026-5048 In Brocade SANnav before 3.0.0a, an SQL Injection vulnerability in various external API... 8d
  • CVE-2026-5047 Insecure Storage of Sensitive Information in Brocade SANnav 8d
  • CVE-2026-94577 A privilege escalation vulnerability exists in the internal Command-Line Interface (CLI)... 8d
  • CVE-2026-94581 An OS command injection vulnerability exists in the REST API management interface of Brocade... 8d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2024-3596 is "RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.", rated Critical. It affects Brocade Sannav (Broadcom); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.0 describes technical severity. EPSS 14.86% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

Comments

Moderated technical discussion. Read the community guidelines.

No comments yet.

Sign in or create an account to comment and suggest corrections.