7.1

CVE-2026-84809: Tencent AI-Infra-Guard skill-scan Analysis Bypass via Excluded Python Bytecode

Deferred
Published 02-09-2026Last modified 24-09-2026

Vulnerability summary

CVE-2026-84809 is a high (CVSS 7.1) Protection Mechanism Failure vulnerability in tencent ai-infra-guard. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 47.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 02-09-2026
    PublishedVulnerability first disclosed.
  2. 24-09-2026
    Last modifiedVulnerability information updated.

Description

Tencent AI-Infra-Guard's skill-scan component excludes compiled Python bytecode files from analysis by hardcoding __pycache__ directories and .pyc/.pyo/.pyd extensions into skip lists across multiple scanning surfaces. Attackers can distribute skills with benign Python source files alongside malicious compiled bytecode that executes on import while the scanner reports a safe verdict, enabling code execution when operators install the skill.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.57%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.57% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Tencent2 products

1 vendor · 2 products

References

6 links