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CVE-2024-39705

28
FAUCET Score

CVE-2024-39705 is a critical remote code execution (RCE) vulnerability affecting NLTK versions up to 3.8.1. It arises when untrusted data packages containing pickled Python code are downloaded and used by NLTK's integrated functionality, such as with averaged_perceptron_tagger or punkt. With a CVSS score of 9.8 (Critical), this vulnerability allows an unauthenticated attacker to achieve full compromise (confidentiality, integrity, availability) with low attack complexity, requiring no user interaction. Despite its high severity and EPSS score, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
N/AN/A
n/aCNA affected

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 55th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: nltkFixed in: 3.9

Vendor Advisories (1)

pipGHSA-cgvx-9447-vcchhigh

ntlk unsafe deserialization vulnerability

Jun 28, 2024

References

github.com / nltk/nltk/issues/2522
github.com / nltk/nltk/issues/3266
vicarius.io / vsociety/posts/rce-in-python-nltk-cve-2024-39705-39706