Security readout for executives and security teams
Plain-English summary
CVE-2025-71373 is a high-severity flaw in picklescan. Vulnerable versions may miss dangerous pickle content using operator.methodcaller, so a file that appears to pass validation could still execute attacker-controlled code when loaded by a downstream system.
Executive priority
Prioritize remediation where picklescan protects ML, data, or artifact ingestion paths. The business risk is validation bypass leading to code execution, not merely scanner failure. No active exploitation is confirmed in the supplied sources.
Technical view
picklescan before 0.0.33 fails to detect operator.methodcaller calls in pickle files. This detection bypass can allow crafted pickle payloads to evade scanning and execute arbitrary code when a target loads the pickle. CVSS 3.1 is 8.1, with network attack vector, low complexity, no privileges, and required user interaction.
Likely exposure
Exposure is most likely where picklescan is used as a trust gate before loading pickle files, especially for externally supplied models, artifacts, or data. Systems that never load scanned pickle files are less directly exposed.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation still depends on a vulnerable picklescan workflow accepting a crafted pickle and a user or process later loading it.
Researcher notes
Key validation point is whether picklescan is a security boundary before pickle loading. The source bundle identifies operator.methodcaller as the missed construct, but defensive review should avoid reproducing payload behavior in production.
Mitigation direction
- Review the GitHub advisory for fixed version guidance.
- Upgrade picklescan so deployed versions are not before 0.0.33.
- Do not rely on scanning alone before loading untrusted pickle files.
- Restrict who can submit pickle files to affected workflows.
- Treat previously accepted pickle artifacts as untrusted until reviewed.
Validation and detection
- Inventory systems and pipelines using picklescan.
- Confirm installed picklescan versions across production and CI.
- Identify workflows that load pickle files after scanning.
- Check whether externally supplied pickle artifacts were accepted.
- Review vendor and VulnCheck advisories for updated guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-693: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-71373 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N2.85.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
7.6HighVector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- GitHub Security Advisory (GHSA-x843-g5mx-g377)CVE reference, VulnCheck · vendor-advisory
- VulnCheck Advisory: picklescan - Remote Code Execution via operator.methodcaller Detection BypassCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Protection Mechanism Failure
Protection Mechanism Failure represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.