Security readout for executives and security teams
Plain-English summary
This is an old Rust standard library memory safety bug affecting Rust before 1.2.0. Under specific panic conditions in BinaryHeap comparisons, the heap can become inconsistent and mishandle memory. The sources do not provide CVSS, active exploitation evidence, or affected product CPEs.
Executive priority
Treat this as an inventory and legacy-code risk unless affected Rust pre-1.2.0 software is found. There is no source-provided exploitation evidence, but memory safety impact warrants remediation if exposure exists.
Technical view
BinaryHeap was not panic-safe before Rust 1.2.0. If generic element comparison panicked inside sift_up or sift_down_range, internal heap state could become inconsistent, leading to zeroed memory being dropped as an arbitrary type and causing a memory safety violation.
Likely exposure
Exposure appears limited to software built with Rust versions before 1.2.0 that uses std::collections::BinaryHeap with comparisons that can panic. The provided sources do not identify downstream products, package versions, CPEs, or deployment contexts.
Exploitation context
The source bundle marks this CVE as not in KEV and provides no cited evidence of active exploitation. Practical impact depends on reachable BinaryHeap operations and panic-capable comparison behavior in affected Rust-built software.
Researcher notes
The key condition is panic during BinaryHeap comparison, leaving inconsistent state and unsafe drop behavior. Sources do not provide CVSS, CWE mapping, exploit details, CPEs, or broad affected-product evidence, so assessment should remain bounded to Rust before 1.2.0.
Mitigation direction
- Identify any software built with Rust before 1.2.0.
- Rebuild affected software with Rust 1.2.0 or later where possible.
- Review vendor guidance for any downstream product-specific fixes.
- Prioritize unsupported or internet-facing Rust-built services for inventory review.
Validation and detection
- Confirm Rust compiler versions used for historical builds.
- Check whether affected code uses std::collections::BinaryHeap.
- Review element comparison implementations for possible panic behavior.
- Verify rebuilt binaries come from a non-affected Rust toolchain.
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
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CVE-2015-20001 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/rust-lang/rust/issues/25842CVE reference · x_refsource_MISC
- https://github.com/rust-lang/rust/pull/25856CVE 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.