How severe is CVE-2023-35846?

CVE-2023-35846 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-2023-35846 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35846?

CVE-2023-35846 affects Virtualsquare Picotcp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-35846?

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-2023-35846 published?

CVE-2023-35846 was published on 2023-06-19 and last updated on 2026-06-17.

CVE-2023-35846

CVE-2023-35846 is a high-severity vulnerability in Virtualsquare 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Virtualsquare Picotcp
Published: 2023-06-19
Last modified: 2026-06-17

Description

VirtualSquare picoTCP (aka PicoTCP-NG) through 2.1 does not check the transport layer length in a frame before performing port filtering.

Frequently asked questions

What is CVE-2023-35846?: VirtualSquare picoTCP (aka PicoTCP-NG) through 2.1 does not check the transport layer length in a frame before performing port filtering.
How severe is CVE-2023-35846?: CVE-2023-35846 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-2023-35846 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35846?: CVE-2023-35846 affects Virtualsquare Picotcp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-35846?: 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-2023-35846 published?: CVE-2023-35846 was published on 2023-06-19 and last updated on 2026-06-17.

References

https://github.com/virtualsquare/picotcp/commit/d561990a358899178115e156871cc054a1c55ffe

Affected products (1)

cpe:2.3:a:virtualsquare:picotcp:*:*:*:*:*:*:*:*

More vulnerabilities in Virtualsquare Picotcp

CVE-2023-35849 — High (CVSS 7.5): VirtualSquare picoTCP (aka PicoTCP-NG) through 2.1 does not properly check whether header sizes would result in…
CVE-2023-35848 — High (CVSS 7.5): VirtualSquare picoTCP (aka PicoTCP-NG) through 2.1 lacks certain size calculations before attempting to set a value of…
CVE-2023-35847 — High (CVSS 7.5): VirtualSquare picoTCP (aka PicoTCP-NG) through 2.1 does not have an MSS lower bound (e.g., it could be zero).

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