CVE-2025-7707
HIGHDescription
The llama_index library version 0.12.33 sets the NLTK data directory to a subdirectory of the codebase by default, which is world-writable in multi-user environments. This configuration allows local users to overwrite, delete, or corrupt NLTK data files, leading to potential denial of service, data tampering, or privilege escalation. The vulnerability arises from the use of a shared cache directory instead of a user-specific one, making it susceptible to local data tampering and denial of service.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 7% of all known CVEs.
References
Related Vulnerabilities
Other CWE-377 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2015-5224 | Critical | 9.8 | 4.5% | - | Fix |
| CVE-2026-20204 | High | 7.1 | 3.3% | - | Fix |
| CVE-2018-3710 | High | 7.8 | 2.9% | - | Fix |
| CVE-2017-16024 | Medium | 6.5 | 2.6% | - | Fix |
| CVE-2012-2666 | Critical | 9.8 | 1.9% | - | - |
| CVE-2018-16494 | High | 8.8 | 1.9% | - | Fix |
Common questions
How do I fix CVE-2025-7707?
Upgrade llamaindex to 0.13.0 or later.
Is CVE-2025-7707 being actively exploited?
Not that we know of. CVE-2025-7707 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.17% is the estimated probability that it will be exploited in the next 30 days. That is higher than 7% of all scored CVEs.
How severe is CVE-2025-7707?
CVE-2025-7707 has a CVSS v3 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-7707 affect?
Published advisories record a fix for llamaindex (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-21.