Security readout for executives and security teams
Plain-English summary
CVE-2020-25575 concerns the obsolete Rust `failure` error-handling crate through 0.1.5. In some applications it can create type confusion during downcasting, potentially breaking assumptions about error types. The CVSS score is critical, but real urgency depends on whether production Rust services still depend on this unsupported crate version.
Executive priority
Prioritize this when Rust applications are business-critical, exposed to untrusted input, or difficult to redeploy. If no affected dependency is present, urgency drops substantially. The main business issue is unsupported dependency risk combined with a critical type-confusion rating.
Technical view
The reported weakness is CWE-843 type confusion in `failure` through 0.1.5, tied to downcasting behavior and described compatibility hazards. The CVE notes affected products are no longer supported by the maintainer and may overlap CVE-2019-25010. No specific CPEs, product list, or active exploitation evidence is provided.
Likely exposure
Exposure is most likely in Rust applications or services that directly or transitively depend on `failure` through 0.1.5. The bundle does not identify packaged products, cloud services, or operating systems as affected.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Treat this as a serious dependency risk because of the critical CVSS and unsupported library status, not because exploitation is confirmed.
Researcher notes
Evidence is limited to public advisory metadata and linked project discussion. The CVE does not provide affected CPEs, a confirmed exploit chain, or a named patch. Analysis should focus on dependency reachability, downcasting use, and whether unsupported library behavior can cross trust boundaries.
Mitigation direction
- Inventory Rust dependency manifests and lockfiles for `failure` through 0.1.5.
- Review RustSec and upstream project guidance for supported replacement direction.
- Migrate away from unsupported `failure` versions where application owners confirm compatibility.
- Prioritize internet-facing or privilege-sensitive Rust services first.
- Track possible overlap with CVE-2019-25010 during remediation decisions.
Validation and detection
- Check `Cargo.lock` and dependency reports for direct or transitive `failure` usage.
- Confirm exact resolved crate versions in production build artifacts.
- Identify code paths using downcasting with errors from the affected crate.
- Verify remediation through dependency review and regression testing.
- Document any remaining unsupported dependency exception with business owner approval.
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-843: 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 lookupCVE-2020-25575 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
CVSS vector scores
1 official scoreWe 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:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/rust-lang-nursery/failure/issues/336CVE reference · x_refsource_MISC
- https://rustsec.org/advisories/RUSTSEC-2020-0036.htmlCVE reference · x_refsource_MISC
- https://boats.gitlab.io/blog/post/failure-to-fehler/CVE reference · x_refsource_MISC
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.
Access of Resource Using Incompatible Type ('Type Confusion')
Access of Resource Using Incompatible Type ('Type Confusion') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.