How severe is CVE-2020-29540?

CVE-2020-29540 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-2020-29540 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-2020-29540?

CVE-2020-29540 affects Systransoft Pure Neural Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29540?

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-2020-29540 published?

CVE-2020-29540 was published on 2020-12-08 and last updated on 2026-06-17.

CVE-2020-29540

CVE-2020-29540 is a high-severity vulnerability in Systransoft Pure Neural 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Systransoft Pure Neural Server
Published: 2020-12-08
Last modified: 2026-06-17

Description

API calls in the Translation API feature in Systran Pure Neural Server before 9.7.0 allow a threat actor to use the Systran Pure Neural Server as a Denial-of-Service proxy by sending a large amount of translation requests to a destination host on any given TCP port regardless of whether a web service is running on the destination port.

Frequently asked questions

What is CVE-2020-29540?: API calls in the Translation API feature in Systran Pure Neural Server before 9.7.0 allow a threat actor to use the Systran Pure Neural Server as a Denial-of-Service proxy by sending a large amount of translation requests to a destination host on any given TCP port regardless of whether a web service is running on the destination port.
How severe is CVE-2020-29540?: CVE-2020-29540 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-2020-29540 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-2020-29540?: CVE-2020-29540 affects Systransoft Pure Neural Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29540?: 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-2020-29540 published?: CVE-2020-29540 was published on 2020-12-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:systransoft:pure_neural_server:*:*:*:*:*:*:*:*

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