How severe is CVE-2023-30463?

CVE-2023-30463 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-30463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30463?

CVE-2023-30463 affects Altran Picotcp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-30463?

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

When was CVE-2023-30463 published?

CVE-2023-30463 was published on 2023-04-19 and last updated on 2026-06-17.

CVE-2023-30463

CVE-2023-30463 is a high-severity vulnerability in Altran Picotcp with a CVSS 3.x base score of 7.5. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Altran Picotcp
Published: 2023-04-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-30463?: 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.
How severe is CVE-2023-30463?: CVE-2023-30463 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-30463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30463?: CVE-2023-30463 affects Altran Picotcp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-30463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-30463 published?: CVE-2023-30463 was published on 2023-04-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:altran:picotcp:*:*:*:*:*:*:*:*

More vulnerabilities in Altran Picotcp

CVE-2021-33304 — Critical (CVSS 9.8): Double Free vulnerability in virtualsquare picoTCP v1.7.0 and picoTCP-NG v2.1 in modules/pico_fragments.c in function…
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CVE-2017-1000210 — Critical (CVSS 9.8): picoTCP (versions 1.7.0 - 1.5.0) is vulnerable to stack buffer overflow resulting in code execution or denial of…
CVE-2020-24341 — Critical (CVSS 9.1): An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The TCP input data processing function in pico_tcp.c…
CVE-2020-17441 — Critical (CVSS 9.1): An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6…
CVE-2020-24340 — High (CVSS 7.5): An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The code that processes DNS responses in…

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Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

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