How severe is CVE-2019-3946?

CVE-2019-3946 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-2019-3946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3946?

CVE-2019-3946 affects Fujielectric V-server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-3946?

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-2019-3946 published?

CVE-2019-3946 was published on 2019-06-12 and last updated on 2026-06-17.

CVE-2019-3946

CVE-2019-3946 is a high-severity vulnerability in Fujielectric V-server 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)
CVSS v2: 5.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Fujielectric V-server
Published: 2019-06-12
Last modified: 2026-06-17

Description

Fuji Electric V-Server before 6.0.33.0 is vulnerable to denial of service via a crafted UDP message sent to port 8005. An unauthenticated, remote attacker can crash vserver.exe due to an integer overflow in the UDP message handling logic.

Frequently asked questions

What is CVE-2019-3946?: Fuji Electric V-Server before 6.0.33.0 is vulnerable to denial of service via a crafted UDP message sent to port 8005. An unauthenticated, remote attacker can crash vserver.exe due to an integer overflow in the UDP message handling logic.
How severe is CVE-2019-3946?: CVE-2019-3946 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-2019-3946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3946?: CVE-2019-3946 affects Fujielectric V-server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-3946?: 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-2019-3946 published?: CVE-2019-3946 was published on 2019-06-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fujielectric:v-server:*:*:*:*:*:*:*:*

More vulnerabilities in Fujielectric V-server

CVE-2019-18240 — Critical (CVSS 9.8): In Fuji Electric V-Server 4.0.6 and prior, several heap-based buffer overflows have been identified, which may allow an…
CVE-2019-3947 — Critical (CVSS 9.8): Fuji Electric V-Server before 6.0.33.0 stores database credentials in project files as plaintext. An attacker that can…
CVE-2023-47586 — High (CVSS 7.8): Multiple heap-based buffer overflow vulnerabilities exist in V-Server V4.0.18.0 and earlier and V-Server Lite V4.0.18.0…
CVE-2023-47585 — High (CVSS 7.8): Out-of-bounds read vulnerability exists in V-Server V4.0.18.0 and earlier and V-Server Lite V4.0.18.0 and earlier. If a…
CVE-2023-47584 — High (CVSS 7.8): Out-of-bounds write vulnerability exists in V-Server V4.0.18.0 and earlier and V-Server Lite V4.0.18.0 and earlier. If…
CVE-2023-31239 — High (CVSS 7.8): Stack-based buffer overflow vulnerability in V-Server v4.0.15.0 and V-Server Lite v4.0.15.0 and earlier allows an…

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Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

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