Security readout for executives and security teams
Plain-English summary
This issue affects Adobe Genuine Service 7.3 and earlier. A signed-in local user, with some user interaction, could abuse the installer to gain powerful read/write capability and potentially run code with elevated impact. It is not listed as CISA KEV in the supplied data, so active exploitation is not established here.
Executive priority
Treat as a high-priority endpoint hygiene issue, especially where Adobe software is broadly deployed. It is not an internet-facing emergency from the supplied evidence, but it can increase attacker impact after initial access.
Technical view
CVE-2021-40708 is a local privilege escalation in the AGSService installer, mapped to CWE-379. The CVSS 3.1 vector is AV:L/AC:L/PR:L/UI:R/S:U with high confidentiality, integrity, and availability impact. The supplied metadata names Adobe Genuine Service in the description but lists Adobe GoCart as the affected product.
Likely exposure
Exposure is most likely on Windows endpoints or managed workstations with Adobe Genuine Service version 7.3 or earlier installed. The attacker needs local authenticated access and user interaction, limiting remote mass exploitation but increasing concern on shared or compromised endpoints.
Exploitation context
The supplied sources do not show public exploitation or KEV listing. Exploitation requires local access, low privileges, and user interaction. The business risk is post-compromise privilege escalation, where an attacker already on a machine may gain stronger control.
Researcher notes
Evidence is limited to CVE metadata and Adobe bulletin references. The affected-product field appears inconsistent with the description, so confirm vendor naming and installed component details during triage. Do not assume active exploitation or specific fixed versions beyond Adobe guidance.
Mitigation direction
- Inventory endpoints for Adobe Genuine Service 7.3 or earlier.
- Review Adobe APSB21-81 for vendor update or mitigation guidance.
- Apply Adobe-provided updates or remediation where applicable.
- Remove unnecessary affected installations through approved software management.
- Restrict interactive access on high-value endpoints where exposure remains.
Validation and detection
- Confirm installed Adobe Genuine Service versions across endpoint inventory.
- Verify remediated systems no longer report version 7.3 or earlier.
- Check whether AGSService installer components remain present after remediation.
- Review endpoint telemetry for unusual installer execution by standard users.
- Document any systems awaiting Adobe or operational remediation guidance.
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-379: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2021-40708 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
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/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:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H1.35.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/integrity_service/apsb21-81.htmlCVE 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.
Creation of Temporary File in Directory with Insecure Permissions
Creation of Temporary File in Directory with Insecure Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.