Security readout for executives and security teams
Plain-English summary
Avaya Aura Utility Services 7.x has a high-severity privilege escalation issue. A user who already has substantial access may be able to gain broader control, potentially affecting confidentiality, integrity, and availability. This is most urgent for organizations still running 7.x in voice or communications environments.
Executive priority
Treat as high priority where Avaya Aura Utility Services 7.x supports business communications. The vulnerability requires existing elevated access, but successful escalation could materially affect critical telecom services.
Technical view
CVE-2021-25651 is a CWE-250 privilege management weakness in Avaya Aura Utility Services. The supplied CVSS 3.1 score is 8.0 with high privileges and high complexity required. The bundle describes local privilege escalation, while the vector lists network attack complexity, so teams should verify details against Avaya guidance.
Likely exposure
Exposure is likely limited to environments running Avaya Aura Utility Services 7.x, including the listed 7.0.0.0 version. Risk depends on whether users or service accounts already have access to the system.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates high privileges and high complexity, so this is not supported as unauthenticated mass exploitation from the supplied evidence.
Researcher notes
Evidence is sparse in the supplied bundle. The affected scope says all 7.x versions, while the structured affected entry lists 7.0.0.0. The local-escalation description also differs from the CVSS network vector; validate against Avaya’s advisory before final scoping.
Mitigation direction
- Check Avaya advisory 101072728 for supported remediation guidance.
- Identify and prioritize all Avaya Aura Utility Services 7.x deployments.
- Restrict local, administrative, and service-account access to affected systems.
- Review privileged account membership and remove unnecessary access.
- Monitor affected hosts for unexpected privilege or configuration changes.
Validation and detection
- Inventory Avaya Aura Utility Services instances and record exact versions.
- Confirm whether any instance is running 7.x or listed 7.0.0.0.
- Compare deployed versions against Avaya advisory 101072728.
- Review privileged user and service-account access on affected hosts.
- Check security logs for unexplained privilege changes or administrative actions.
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-250: 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-2021-25651 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/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:H/PR:H/UI:N/S:C/C:H/I:H/A:H1.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.avaya.com/css/P8/documents/101072728CVE 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.
Execution with Unnecessary Privileges
Execution with Unnecessary Privileges represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.