Security readout for executives and security teams
Plain-English summary
Zoho ManageEngine Remote Access Plus versions before 10.1.2121.1 used the application build number to calculate an encryption key. A build number is not a secret, so this design weakens protection for anything relying on that key. The source bundle does not provide CVSS scoring or confirmed exploitation evidence.
Executive priority
Treat this as a targeted remediation item for remote administration infrastructure. It is not known to be exploited from the provided evidence, but predictable encryption keys can weaken trust in protected product data. Prioritize confirming versions and applying the vendor hotfix.
Technical view
CVE-2021-41829 is a key-derivation weakness in ManageEngine Remote Access Plus before 10.1.2121.1. The encryption key is derived from the application build number, making the key predictable rather than independently secret. Public sources identify the issue as statically derived encryption key behavior, but do not include CVSS, CWE, or exploit confirmation.
Likely exposure
Exposure is likely limited to organizations running Zoho ManageEngine Remote Access Plus before 10.1.2121.1. Because this is remote administration software, affected deployments may have elevated operational sensitivity, especially where the product stores or protects credentials, configuration, or remote-access data.
Exploitation context
The source bundle does not show CISA KEV listing or any cited active exploitation. Public disclosure exists, and the weakness is conceptually straightforward: deriving an encryption key from a build number reduces secrecy. Evidence is insufficient to claim real-world exploitation or specific attack paths.
Researcher notes
The available record is sparse: no CVSS vector, CWE, CPE, or exploit-status detail is supplied. Analysis should stay bounded to the documented behavior: key calculation from build number in Remote Access Plus before 10.1.2121.1. Avoid assuming affected data types without vendor or researcher confirmation.
Mitigation direction
- Upgrade ManageEngine Remote Access Plus to version 10.1.2121.1 or later.
- Review Zoho ManageEngine hotfix notes for any additional vendor guidance.
- Inventory all Remote Access Plus servers and confirm deployed versions.
- Limit administrative access to affected deployments during remediation.
- Assess whether sensitive data protected by the affected encryption needs rotation.
Validation and detection
- Check each Remote Access Plus instance version against 10.1.2121.1.
- Confirm hotfix installation through the product console or vendor-supported method.
- Review asset inventory for unmanaged or forgotten Remote Access Plus deployments.
- Check vendor advisories for post-upgrade verification guidance.
- Document any sensitive data that may have relied on affected encryption.
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.
CVE-2021-41829 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.manageengine.com/remote-desktop-management/hotfix-readme.htmlCVE reference · x_refsource_MISC
- https://medium.com/nestedif/vulnerability-disclosure-statically-derived-encryption-key-zoho-r-a-p-907088263197CVE 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.