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Fencer Vulns
high 7.8

CVE-2021-25758 json

In JetBrains IntelliJ IDEA before 2020.3, potentially insecure deserialization of the workspace model could lead to local code execution.

published 2021-02-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-12641

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

In JetBrains IntelliJ IDEA before 2020.3, potentially insecure deserialization of the workspace model could lead to local code execution.

Patch / fix

  • jetbrains intellij_idea 2020.3

Exploit prediction

1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.