Security readout for executives and security teams
Plain-English summary
This Microsoft authentication-component flaw could let a low-privileged local user expose sensitive information through a race condition. It does not appear remotely exploitable from the supplied evidence and does not affect integrity or availability. Systems using the identified Azure Identity or Microsoft Authentication libraries should be inventoried and updated using Microsoft’s advisory.
Executive priority
Treat as a planned, time-bounded remediation rather than an emergency. Assign ownership promptly because authentication libraries can be widely embedded and confidentiality impact is rated high. Accelerate remediation on shared or sensitive systems where low-privileged local access is available. Escalate if Microsoft or CISA later reports exploitation.
Technical view
CVE-2024-35255 is a CWE-362 race condition affecting listed Azure Identity libraries and Microsoft Authentication Library components. CVSS 3.1 is 5.5: local access, low complexity, low privileges, no user interaction, unchanged scope, and high confidentiality impact. The bundle identifies version 1.0.0 for each listed product, but does not establish whether that version information is exhaustive.
Likely exposure
Exposure requires an affected library and an attacker who already has low-privileged local access. Prioritize shared systems, developer environments, build infrastructure, and other hosts where untrusted local users may coexist with applications using these libraries. The supplied sources do not identify affected operating systems, deployment configurations, or complete package-version ranges.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle. Its CVSS vector records exploit maturity as unproven. There is therefore no source-grounded evidence here of active exploitation or a public working exploit. Local access and existing privileges reduce reach, while potential disclosure of highly sensitive information remains consequential.
Researcher notes
The supplied data supports a local, low-complexity race condition with confidentiality-only impact, but provides no race location, affected code path, prerequisite configuration, or exhaustive version boundaries. The generic 1.0.0 entries across multiple language libraries warrant confirmation against Microsoft’s advisory before making exposure decisions. Avoid inferring cross-language implementation details from CWE-362 alone.
Mitigation direction
- Inventory applications and dependencies using the listed Azure Identity or Microsoft Authentication libraries.
- Consult Microsoft’s CVE advisory for exact affected packages, fixed versions, and update instructions.
- Apply Microsoft-provided updates after compatibility testing, prioritizing multi-user and sensitive authentication environments.
- Restrict local access and remove unnecessary low-privileged accounts until affected components are remediated.
- Monitor Microsoft guidance for revised package ranges or additional mitigations.
Validation and detection
- Generate dependency inventories and compare package names and versions with Microsoft’s current advisory.
- Confirm deployed artifacts, containers, and build outputs no longer contain affected library versions.
- Verify application authentication functions after updating affected dependencies.
- Review local account access on hosts running affected applications.
- Record the remediated package version and deployment evidence for each affected asset.
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-362: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-35255 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
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
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C1.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
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
- Azure Identity Libraries and Microsoft Authentication Library Elevation of Privilege VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.