How severe is CVE-2022-24705?

CVE-2022-24705 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-2022-24705 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-2022-24705?

CVE-2022-24705 affects Accel-ppp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-24705?

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-2022-24705 published?

CVE-2022-24705 was published on 2022-02-14 and last updated on 2026-06-17.

CVE-2022-24705

CVE-2022-24705 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 radius/packet.c suffers from a memcpy buffer overflow, resulting in an overly-large recvfrom into a fixed buffer that causes a buffer overflow and overwrites arbitrary memory. If the server connects with a malicious client, crafted client requests can remotely trigger this vulnerability.

Frequently asked questions

What is CVE-2022-24705?: The rad_packet_recv function in radius/packet.c suffers from a memcpy buffer overflow, resulting in an overly-large recvfrom into a fixed buffer that causes a buffer overflow and overwrites arbitrary memory. If the server connects with a malicious client, crafted client requests can remotely trigger this vulnerability.
How severe is CVE-2022-24705?: CVE-2022-24705 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-2022-24705 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-2022-24705?: CVE-2022-24705 affects Accel-ppp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-24705?: 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-2022-24705 published?: CVE-2022-24705 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-2022-24704 — Critical (CVSS 9.8): The rad_packet_recv function in opt/src/accel-pppd/radius/packet.c suffers from a buffer overflow vulnerability,…
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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