Security readout for executives and security teams
Plain-English summary
A Red Discord bot plugin collection, tmerc-cogs, leaked sensitive information through MassDM when a low-privileged user crafted a specific message. Organizations running the affected cog before the patch commit should update or disable MassDM, because confidentiality impact is high.
Executive priority
Prioritize remediation where Discord bots handle sensitive operational, customer, or staff information. This is not marked as known exploited, but the low access requirement and high confidentiality impact justify near-term patching or disabling MassDM.
Technical view
CVE-2021-37696 affects tmerc-cogs versions before commit 92325be650a6c17940cc5. The advisory describes unauthorized access to sensitive information through MassDM. CVSS 3.1 is 7.1 high, with network access, low privileges, no user interaction, high confidentiality impact, and low integrity impact.
Likely exposure
Exposure is limited to Red Discord bot deployments using tmerc-cogs with the MassDM cog or command enabled and code older than the patched commit. Public sources do not identify broader products or packaged downstream distributions.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The issue is still practical because the advisory says any user can trigger the flaw by crafting a MassDM message, assuming access to the vulnerable bot context.
Researcher notes
The listed weakness is CWE-306, while the description centers on low-privileged access to sensitive information through MassDM. Sources identify the patch commit and workarounds but do not provide enough public detail to infer exploit prevalence, exact leaked data types, or downstream package status.
Mitigation direction
- Update tmerc-cogs to commit 92325be650a6c17940cc5 or a current later commit.
- Unload the MassDM cog if immediate updating is not possible.
- Globally disable the [p]massdm command as a temporary workaround.
- Review vendor advisory and repository guidance before re-enabling MassDM.
Validation and detection
- Inventory Red Discord bot instances using tmerc-cogs.
- Confirm deployed code includes commit 92325be650a6c17940cc5 or later.
- Check whether the MassDM cog is loaded on each bot.
- Verify the [p]massdm command is disabled if not patched.
- Review bot access policy for low-privileged users who can interact with MassDM.
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-2021-37696 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
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:L/UI:N/S:U/C:H/I:L/A:N2.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/tmercswims/tmerc-cogs/security/advisories/GHSA-ffhm-9c8j-wx9hCVE reference · x_refsource_CONFIRM
- https://github.com/tmercswims/tmerc-cogs/commit/92325be650a6c17940cc5CVE 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.
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.