Variable underflow exists in accel-ppp radius/packet.c when receiving a RADIUS…
Priority MEDIUM 48CWE-191Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.
Summary
Variable underflow exists in accel-ppp radius/packet.c when receiving a RADIUS vendor-specific attribute with length field is less than 2. It has an impact only when the attacker controls the RADIUS server, which can lead to arbitrary code execution.
Why it matters now
EPSS 0.03134 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:accel-ppp:accel-ppp:*:*:*:*:*:*:*:* | before 1.12.0-e9d369a | Vulnerable | https://accel-ppp.org/ |
- cpe:2.3:a:accel-ppp:accel-ppp:*:*:*:*:*:*:*:* Versions before 1.12.0-e9d369a Vulnerable ·https://accel-ppp.org/
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28194
References
More https://accel-ppp.org/ Accel-ppp vulnerabilities
- TI-2022-00881 Buffer Overflow via crafted client request in Accel-PPP v1.12 CVSS 3.1CRITICAL 9.8
- TI-2022-08520 Buffer Overflow via Crafted Ipv6 Prefix Attribute Type Client Request in accel-ppp v1.12 CVSS 3.1CRITICAL 9.8
- TI-2022-08519 Buffer Overflow via Crafted IPv6 Addr Attribute Type Client Request in Accel-PPP v1.12 CVSS 3.1CRITICAL 9.8
- TI-2020-11945 Heap buffer overflow in ACCEL-PPP CVSS 3.1CRITICAL 9.8
- TI-2021-19024 ACCEL-PPP 1.12.0 has an out-of-bounds read in post_msg when processing a call_clear_request. CVSS 3.1HIGH 7.5
- TI-2021-18565 ACCEL-PPP 1.12.0 has an out-of-bounds read in triton_context_schedule if the client exits after authentication. CVSS 3.1HIGH 7.5
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences