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: 2024-07-09 Last update: 2026-05-12 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-3596 is rated High Risk (69.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 22.16%, 96th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-3596

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-04 22.61% 22.16% -0.45%
2 2026-06-02 19.77% 22.61% +2.84%
3 2026-05-28 — 19.77% —

Full EPSS history (96 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-3596

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 6.0 [email protected]
9.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 6.0 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-3596

GitHub Security Advisory for CVE-2024-3596

GHSA-3g8x-wqfp-q876 · Severity: critical — RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can...

OS Trackers for CVE-2024-3596

vendor priority summary link
alpine — CVE-2024-3596: 1 source package rows (freeradius); 10 state rows across 6 repos (3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 6, open 4. https://security.alpinelinux.org/vuln/CVE-2024-3596
debian not yet assigned CVE-2024-3596 not yet assigned priority: Debian including 1 source packages (freeradius), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2024-3596
redhat high — https://access.redhat.com/security/cve/CVE-2024-3596
suse high CVE-2024-3596 severity important: SUSE including 120 source package names (freeradius-3.0.13-15.el7_9.1, freeradius-3.0.20-15.module+el8.10.0+22065+aa3d48ca, …), 331 product×package rows across 29 product lines (SUSE Enterprise Storage 7.1, SUSE Liberty Linux 7 LTSS, … (29 product lines)): Fixed 331. https://www.suse.com/security/cve/CVE-2024-3596/
ubuntu medium CVE-2024-3596 medium priority: Ubuntu including 3 source packages (freeradius, krb5, libpam-radius-auth), 30 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 14, needs-triage 7, not-affected 5, ignored 2, needed 2. https://ubuntu.com/security/CVE-2024-3596

Affected software / configurations for CVE-2024-3596

Vendor Product Version Raw CPE
freeradius freeradius < 3.0.27 cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:*
broadcom brocade_sannav — cpe:2.3:a:broadcom:brocade_sannav:-:*:*:*:*:*:*:*
broadcom fabric_operating_system — cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:*
sonicwall sonicos — cpe:2.3:o:sonicwall:sonicos:-:*:*:*:*:*:*:*

References for CVE-2024-3596

URL Tags
http://www.openwall.com/lists/oss-security/2024/07/09/4 Mailing List
https://cert-portal.siemens.com/productcert/html/ssa-723487.html
https://cert-portal.siemens.com/productcert/html/ssa-794185.html
https://datatracker.ietf.org/doc/draft-ietf-radext-deprecating-radius/ Technical Description
https://datatracker.ietf.org/doc/html/rfc2865 Technical Description
https://networkradius.com/assets/pdf/radius_and_md5_collisions.pdf Third Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0014 Third Party Advisory
https://www.blastradius.fail/ Technical Description
https://security.netapp.com/advisory/ntap-20240822-0001/ Third Party Advisory
https://today.ucsd.edu/story/computer-scientists-discover-vulnerabilities-in-a-popular-security-protocol Third Party Advisory
https://www.kb.cert.org/vuls/id/456537
https://cert-portal.siemens.com/productcert/html/ssa-364175.html
https://cert-portal.siemens.com/productcert/html/ssa-770770.html
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