How severe is CVE-2022-24704?

CVE-2022-24704 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-24704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-24704?

CVE-2022-24704 affects Accel-ppp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-24704?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-24704 published?

CVE-2022-24704 was published on 2022-02-14 and last updated on 2026-06-17.

CVE-2022-24704

CVE-2022-24704 is a critical-severity vulnerability in Accel-ppp with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Accel-ppp
Published: 2022-02-14
Last modified: 2026-06-17

Description

The rad_packet_recv function in opt/src/accel-pppd/radius/packet.c suffers from a buffer overflow vulnerability, whereby user input len is copied into a fixed buffer &attr->val.integer without any bound checks. If the client connects to the server and sends a large radius packet, a buffer overflow vulnerability will be triggered.

Frequently asked questions

What is CVE-2022-24704?: The rad_packet_recv function in opt/src/accel-pppd/radius/packet.c suffers from a buffer overflow vulnerability, whereby user input len is copied into a fixed buffer &attr->val.integer without any bound checks. If the client connects to the server and sends a large radius packet, a buffer overflow vulnerability will be triggered.
How severe is CVE-2022-24704?: CVE-2022-24704 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-24704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-24704?: CVE-2022-24704 affects Accel-ppp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-24704?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-24704 published?: CVE-2022-24704 was published on 2022-02-14 and last updated on 2026-06-17.

References

https://github.com/accel-ppp/accel-ppp/pull/35

Affected products (1)

cpe:2.3:a:accel-ppp:accel-ppp:*:*:*:*:*:*:*:*

More vulnerabilities in Accel-ppp

CVE-2022-0982 — Critical (CVSS 9.8): The telnet_input_char function in opt/src/accel-pppd/cli/telnet.c suffers from a memory corruption vulnerability,…
CVE-2022-24705 — Critical (CVSS 9.8): The rad_packet_recv function in radius/packet.c suffers from a memcpy buffer overflow, resulting in an overly-large…
CVE-2020-28194 — Critical (CVSS 9.8): Variable underflow exists in accel-ppp radius/packet.c when receiving a RADIUS vendor-specific attribute with length…
CVE-2020-15173 — High (CVSS 8.2): In ACCEL-PPP (an implementation of PPTP/PPPoE/L2TP/SSTP), there is a buffer overflow when receiving an l2tp control…
CVE-2021-42870 — High (CVSS 7.5): ACCEL-PPP 1.12.0 has an out-of-bounds read in post_msg when processing a call_clear_request.
CVE-2021-42054 — High (CVSS 7.5): ACCEL-PPP 1.12.0 has an out-of-bounds read in triton_context_schedule if the client exits after authentication.

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