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Vulnerability record · CVE-2023-30463 · published 19 April 2023

CVE-2023-30463: Altran picotcp integer overflow vulnerability

Altran · Picotcp

Altran picoTCP through 1.7.0 allows memory corruption (and subsequent denial of service) because of an integer overflow in pico_ipv6_alloc when processing large ICMPv6 packets. This affects installations with Ethernet support in which a packet size greater than 65495 may occur.

7.5 CVSS 3.1 High EPSS 0.87% · top 42.7% CWE-190 · Integer overflow
7.5CVSS 3.1 base score
0.87%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Altran picoTCP through 1.7.0 allows memory corruption (and subsequent denial of service) because of an integer overflow in pico_ipv6_alloc when processing large ICMPv6 packets. This affects installations with Ethernet support in which a packet size greater than 65495 may occur.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://georgyg.com/home/picotcp-denial-of-service-cve-2023-30463/ ExploitThird Party Advisory
https://github.com/tass-belgium/picotcp/releases Release Notes
https://georgyg.com/home/picotcp-denial-of-service-cve-2023-30463/ ExploitThird Party Advisory
https://github.com/tass-belgium/picotcp/releases Release Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-33304Altran picotcp double free vulnerabilityDouble Free vulnerability in virtualsquare picoTCP v1.7.0 and picoTCP-NG v2.1 in modules/pico_fragments.c in function pico_fragments_reassemble, allo…EPSS 0.84%9.8CVE-2020-24338Altran picotcp out-of-bounds write vulnerabilityAn issue was discovered in picoTCP through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name() in pico_dns_co…EPSS 37%9.8CVE-2017-1000210Altran picotcp memory buffer overflow vulnerabilitypicoTCP (versions 1.7.0 - 1.5.0) is vulnerable to stack buffer overflow resulting in code execution or denial of service attackEPSS 2.2%9.1CVE-2020-24341Altran picotcp out-of-bounds read vulnerabilityAn issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The TCP input data processing function in pico_tcp.c does not validate the length of…EPSS 5.0%9.1CVE-2020-17441Altran picotcp out-of-bounds read vulnerabilityAn issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6 payload length field is equal t…EPSS 7.0%7.5CVE-2020-24339Altran picotcp out-of-bounds read vulnerabilityAn issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name()…EPSS 2.8%7.5CVE-2020-24340Altran picotcp out-of-bounds read vulnerabilityAn issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The code that processes DNS responses in pico_mdns_handle_data_as_answers_generic() …EPSS 2.9%7.5CVE-2020-17442Altran picotcp integer overflow vulnerabilityAn issue was discovered in picoTCP 1.7.0. The code for parsing the hop-by-hop IPv6 extension headers does not validate the bounds of the extension he…EPSS 3.1%

Source: NIST National Vulnerability Database (record CVE-2023-30463), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.