Security readout for executives and security teams
Plain-English summary
This vulnerability affects Cisco ASDM Launcher workflows. An attacker positioned between an administrator and ASDM could tamper with exchanged code because signature verification was insufficient, potentially running code on the administrator's workstation. It is serious, but exploitation requires network interception and user interaction.
Executive priority
Treat as high priority for teams administering Cisco ASA through ASDM. The business risk is compromise of privileged administrator workstations, but urgency is moderated by required user interaction and man-in-the-middle positioning.
Technical view
CVE-2021-1585 is a CWE-94 code injection issue in Cisco ASDM Launcher. The weakness is improper signature verification for specific code exchanged between ASDM and the Launcher. Successful exploitation can execute arbitrary code with ASDM Launcher privileges. CVSS v3.1 is 7.5, with network attack vector, high complexity, and required user interaction.
Likely exposure
Exposure is most likely where administrators use Cisco ASDM Launcher to manage Cisco ASA environments, especially across networks where a man-in-the-middle position is plausible. The supplied affected entry names Cisco Adaptive Security Appliance Software but does not provide affected version details.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. It references Cisco's advisory, Rapid7 research, and a GitHub repository. Exploitation requires a man-in-the-middle position and may require social engineering to get a user to initiate Launcher-to-ASDM communication.
Researcher notes
Key gaps are exact affected and fixed versions, which are not present in the supplied bundle. Validate against Cisco's advisory before scoping remediation. Avoid assuming active exploitation because KEV is false and no cited source in the bundle confirms exploitation in the wild.
Mitigation direction
- Review Cisco's advisory for affected and fixed release details.
- Update ASDM Launcher or related Cisco components per vendor guidance.
- Restrict ASDM management access to trusted administrative networks.
- Reduce man-in-the-middle risk on administrator network paths.
- Warn administrators against unsolicited ASDM Launcher connection prompts.
Validation and detection
- Inventory Cisco ASA environments using ASDM Launcher.
- Compare deployed versions against Cisco advisory guidance.
- Confirm ASDM access is limited to trusted admin networks.
- Review admin workstations for unexpected ASDM Launcher activity.
- Check whether Launcher-to-ASDM paths traverse untrusted networks.
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-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. 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 lookupCVE-2021-1585 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/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:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210707 Cisco Adaptive Security Device Manager Remote Code Execution VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
- https://www.rapid7.com/blog/post/2022/08/11/rapid7-discovered-vulnerabilities-in-cisco-asa-asdm-and-firepower-services-software/CVE reference · x_refsource_MISC
- https://github.com/jbaines-r7/staystaystayCVE 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.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.