Security readout for executives and security teams
Plain-English summary
This issue can let a low-privileged network user make configuration changes on affected Arista EOS switches through OpenConfig/gNMI when the request should be rejected. The business risk is unauthorized or unexpected switch configuration, which can disrupt network availability or weaken security controls.
Executive priority
Treat this as high-priority network infrastructure risk. Prioritize internet-adjacent or broadly reachable management planes first, then all affected internal switches. Business impact is service disruption or unauthorized network behavior from unexpected configuration changes.
Technical view
CVE-2024-27892 affects Arista EOS versions 4.24.0 through 4.31.0 on platforms with OpenConfig configured and SSL Profiles enabled. A gNMI Set request may be accepted incorrectly, allowing unexpected configuration changes. CVSS 3.1 is 9.6 with network access, low complexity, low privileges, and high integrity and availability impact.
Likely exposure
Exposure is limited to Arista EOS systems in the listed version range where OpenConfig is configured and SSL Profiles are enabled. Devices without this configuration are not identified as affected in the provided sources.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not marked KEV. The vulnerability is still urgent because it is remotely reachable over the network, requires only low privileges, and can alter switch configuration.
Researcher notes
Evidence supports affected EOS versions 4.24.0 through 4.31.0 with OpenConfig and SSL Profiles enabled. The sources do not provide exploit details, observed exploitation, or a specific fixed version in the supplied bundle, so remediation should follow Arista advisory 0099.
Mitigation direction
- Identify affected Arista EOS versions and OpenConfig deployments immediately.
- Check Arista advisory 0099 for fixed releases, workarounds, and upgrade guidance.
- Prioritize remediation for switches reachable from broad or shared management networks.
- Restrict OpenConfig/gNMI access to approved management paths and trusted administrators.
- Review recent configuration changes for unexpected or unauthorized modifications.
Validation and detection
- Inventory Arista EOS devices and record exact EOS versions.
- Confirm whether OpenConfig is configured on each device.
- Confirm whether SSL Profiles are enabled on OpenConfig-enabled devices.
- Compare running configurations against approved baselines.
- Review management logs for unexpected gNMI Set activity.
- Track Arista advisory updates for affected-version and remediation changes.
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-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2024-27892 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
- 9.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/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
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:L/UI:N/S:C/C:N/I:H/A:H3.15.8AristaCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N——AristaVulnerability scoring details
Base CVSS 4.0 score
7.2HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
9.6CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
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.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.arista.com/en/support/advisories-notices/security-advisory/19862-security-advisory-0099CVE reference, Arista
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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.