CVE-2025-33255

NVIDIA TRT-LLM for any platform contains a vulnerability in MPI server, where an attacker could cause an unsafe deserialization. A successful exploit of this vulnerability might lead to code execution, denial of service, data tampering, and information disclosure.

Published: 2026-05-20 Last update: 2026-05-21 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-33255 is rated Low Risk (36/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-33255

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-26 0.04% 0.06% +0.01%
2 2026-05-21 0.06% 0.04% -0.02%
3 2026-05-20 0.06%

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-33255

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
0.8 6.0 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.9 [email protected]

Weakness enumeration for CVE-2025-33255

GitHub Security Advisory for CVE-2025-33255

GHSA-gvr5-23jj-pf9p · Severity: high — NVIDIA TRT-LLM for any platform contains a vulnerability in MPI server, where an attacker could...

Affected software / configurations for CVE-2025-33255

Vendor Product Version Raw CPE
nvidia tensorrt_llm < 1.2 cpe:2.3:a:nvidia:tensorrt_llm:*:*:*:*:*:*:*:*

References for CVE-2025-33255

URL Tags
https://nvd.nist.gov/vuln/detail/CVE-2025-33255 Third Party Advisory US Government Resource
https://nvidia.custhelp.com/app/answers/detail/a_id/5805 Vendor Advisory
https://www.cve.org/CVERecord?id=CVE-2025-33255 Third Party Advisory VDB Entry
cvelogic Threat Intelligence