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CVE-2025-67748

Trailofbits Fickling insecure deserialization

7.8 HIGHPublic exploitEPSS 0.27%
  1. Published16 Dec 2025

Description

Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly flagged as `LIKELY_SAFE`, and was fixed in version 0.1.6. This impacted any user or system that used Fickling to vet pickle files for security issues.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Trailofbits Fickling< 0.1.6

Remediation

Fixed in
Trailofbits Fickling≥ 0.1.6

References

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Frequently asked

Is CVE-2025-67748 being actively exploited?

CVE-2025-67748 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.27%.

How severe is CVE-2025-67748?

CVE-2025-67748 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.27% probability of exploitation.

Which products are affected by CVE-2025-67748?

Affected products include Trailofbits Fickling.

How do I fix CVE-2025-67748?

Upgrade affected software to a fixed version, for example Trailofbits Fickling 0.1.6 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-67748 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.