Memory leak in FreeRADIUS before 1.0.1 allows remote attackers to cause a denial of…
Priority LOW 29Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Memory leak in FreeRADIUS before 1.0.1 allows remote attackers to cause a denial of service (memory exhaustion) via a series of Access-Request packets with (1) Ascend-Send-Secret, (2) Ascend-Recv-Secret, or (3) Tunnel-Password attributes.
Why it matters now
EPSS 0.03263 88th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:freeradius:freeradius:0.2:*:*:*:*:*:*:* | 0.2 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.3:*:*:*:*:*:*:* | 0.3 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.4:*:*:*:*:*:*:* | 0.4 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.5:*:*:*:*:*:*:* | 0.5 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.8:*:*:*:*:*:*:* | 0.8 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.8.1:*:*:*:*:*:*:* | 0.8.1 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.9:*:*:*:*:*:*:* | 0.9 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.9.1:*:*:*:*:*:*:* | 0.9.1 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.9.2:*:*:*:*:*:*:* | 0.9.2 | Vulnerable | freeradius |
| cpe:2.3:a:freeradius:freeradius:0.9.3:*:*:*:*:*:*:* | 0.9.3 | Vulnerable | freeradius |
- cpe:2.3:a:freeradius:freeradius:0.2:*:*:*:*:*:*:* Versions 0.2 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.3:*:*:*:*:*:*:* Versions 0.3 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.4:*:*:*:*:*:*:* Versions 0.4 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.5:*:*:*:*:*:*:* Versions 0.5 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.8:*:*:*:*:*:*:* Versions 0.8 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.8.1:*:*:*:*:*:*:* Versions 0.8.1 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.9:*:*:*:*:*:*:* Versions 0.9 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.9.1:*:*:*:*:*:*:* Versions 0.9.1 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.9.2:*:*:*:*:*:*:* Versions 0.9.2 Vulnerable ·freeradius
- cpe:2.3:a:freeradius:freeradius:0.9.3:*:*:*:*:*:*:* Versions 0.9.3 Vulnerable ·freeradius
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:freeradius:freeradius:1.0.0:*:*:*:*:*:*:* | 1.0.0 | Vulnerable | freeradius |
| cpe:2.3:o:redhat:enterprise_linux:3.0:*:advanced_server:*:*:*:*:* | 3.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:3.0:*:enterprise_server:*:*:*:*:* | 3.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:fedora_core:core_2.0:*:*:*:*:*:*:* | core_2.0 | Vulnerable | Red Hat |
- cpe:2.3:a:freeradius:freeradius:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·freeradius
- cpe:2.3:o:redhat:enterprise_linux:3.0:*:advanced_server:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:3.0:*:enterprise_server:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:fedora_core:core_2.0:*:*:*:*:*:*:* Versions core_2.0 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2004:609 Released 2004-11-12 · Red Hat rating Moderatefreeradius security update
- Red Hat Enterprise Linux AS version 3 freeradius-1.0.1-1.RHEL3, freeradius-1.0.1-1.RHEL3.i386, freeradius-1.0.1-1.RHEL3.ia64 +1
- Red Hat Enterprise Linux ES version 3 freeradius-1.0.1-1.RHEL3, freeradius-1.0.1-1.RHEL3.i386, freeradius-1.0.1-1.RHEL3.ia64
Vendor assessments
Red Hat
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2004:609 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2004:609 |
Timeline
- 2026-10-02 Threatist record created from CVE-2004-0961
- 2026-10-03 Alias added: GHSA-x6x8-7c65-c9gg
References
Advisory 2
Sources
- CVE-2004-0961 · CVE Program
- CVE-2004-0961 · NVD
- FIRST EPSS
- GHSA-x6x8-7c65-c9gg · GitHub Advisory Database · CC BY 4.0
- CVE-2004-0961 · Red Hat security data · CC BY 4.0
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