How severe is CVE-2025-29783?

CVE-2025-29783 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-29783 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-29783?

CVE-2025-29783 affects Vllm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-29783?

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

Does CVE-2025-29783 have an EU (EUVD) identifier?

Yes. CVE-2025-29783 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6725.

When was CVE-2025-29783 published?

CVE-2025-29783 was published on 2025-03-19 and last updated on 2026-06-17.

CVE-2025-29783

CVE-2025-29783 is a critical-severity vulnerability in Vllm with a CVSS 3.x base score of 9.0. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-6725
Weakness: CWE-502
Affected product: Vllm
Published: 2025-03-19
Last modified: 2026-06-17

Description

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. When vLLM is configured to use Mooncake, unsafe deserialization exposed directly over ZMQ/TCP on all network interfaces will allow attackers to execute remote code on distributed hosts. This is a remote code execution vulnerability impacting any deployments using Mooncake to distribute KV across distributed hosts. This vulnerability is fixed in 0.8.0.

Frequently asked questions

What is CVE-2025-29783?: vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. When vLLM is configured to use Mooncake, unsafe deserialization exposed directly over ZMQ/TCP on all network interfaces will allow attackers to execute remote code on distributed hosts. This is a remote code execution vulnerability impacting any deployments using Mooncake to distribute KV across distributed hosts. This vulnerability is fixed in 0.8.0.
How severe is CVE-2025-29783?: CVE-2025-29783 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-29783 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-29783?: CVE-2025-29783 affects Vllm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-29783?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-29783 have an EU (EUVD) identifier?: Yes. CVE-2025-29783 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6725.
When was CVE-2025-29783 published?: CVE-2025-29783 was published on 2025-03-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

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