Security readout for executives and security teams
Plain-English summary
Cmder Console Emulator 1.3.18 is reported vulnerable to a buffer overflow that can crash Cmder when processing a malicious .cmd file. The supplied record rates it critical, but the described observable impact is application denial of service. No source in the bundle confirms active exploitation or a vendor fix.
Executive priority
Prioritize assessment on developer and privileged-user workstations. The business risk is disruption and potential uncertainty around memory corruption impact. Because public PoC information exists but active exploitation is not confirmed, treat this as urgent validation rather than emergency response.
Technical view
The record describes CWE-787 out-of-bounds write in Cmder.exe 1.3.18, triggered by a specially crafted .cmd file. ExploitDB is cited as containing a PoC. The CVSS vector is 9.8 network/no-user-interaction, but the narrative describes file-based triggering; treat exposure details as not fully resolved.
Likely exposure
Organizations are likely exposed where Cmder Console Emulator 1.3.18 is installed, especially on developer or administrator workstations that handle untrusted scripts. The bundle does not identify other affected versions, server-side exposure, or default file association behavior.
Exploitation context
A public PoC reference exists on ExploitDB, but there is no KEV listing and no cited evidence of active exploitation. The described attack depends on a malicious .cmd file reaching an environment where Cmder processes it.
Researcher notes
The source bundle contains tension between the CVSS vector and the file-based description. Do not assume remote unauthenticated exploitation beyond the cited record. Confirm the official CVE details, affected version, and any upstream issue or release notes before expanding scope.
Mitigation direction
- Identify and prioritize systems running Cmder Console Emulator 1.3.18.
- Check the Cmder GitHub repository and CVE record for vendor guidance or fixed releases.
- Restrict handling of untrusted .cmd files on systems using Cmder.
- Apply standard endpoint controls for script delivery, scanning, and user download locations.
- Consider removing Cmder 1.3.18 where no vendor remediation is available.
Validation and detection
- Confirm whether Cmder 1.3.18 is present in software inventory.
- Review endpoint telemetry for Cmder crashes linked to .cmd file handling.
- Check whether users receive or open untrusted .cmd files.
- Verify any available vendor update has been applied after release.
- Document exceptions where Cmder remains installed without a fix.
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-787: 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 lookupCVE-2021-47781 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50401CVE reference · exploit
- Cmder GitHub RepositoryCVE reference · product
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.