CVE-2021-40539
Is CVE-2021-40539 real, exploitable, or a false positive? Here's the community verdict.
signals
public sources
Confirmed exploited in the wild. Patch this first, regardless of the base score.
public exploits
links to sources — we don’t host codeA working exploit is publicly available from a maintained source. Treat this as higher urgency and verify your exposure.
baseline read
auto · not a community verdict
Real — exploited in the wild
CISA confirms active exploitation. Treat scanner hits as true positives unless your specific version or config is unaffected.
Based on CISA KEV
Confirm or dispute →CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.
References
Published
Embed this verdict
[](https://www.truepositive.app/cve/CVE-2021-40539)<a href="https://www.truepositive.app/cve/CVE-2021-40539"><img src="https://www.truepositive.app/cve/CVE-2021-40539/badge.svg" alt="TruePositive verdict for CVE-2021-40539"></a>Live badge that updates automatically as the community verdict changes.
Community ground truth
Be the first practitioner to weigh in
So far this is only TruePositive's editorial baseline from public sources. Add your real-world verdict below — it becomes the signal the next person triaging this relies on.
🥇 The first 50 practitioners to contribute earn a Founding Contributor badge.
In your experience, is this finding real and exploitable?
awaiting field verdictsCurated baseline: TruePositive's read from public sources is Real & exploitable — a starting point, not a community verdict.
No account needed. Anonymous verdicts post as an unverified signal. Log in to make yours verified and earn reputation.
Field notes & remediation
Verdicts are the quick signal. Notes are the evidence and fixes behind them.
- 0
This is confirmed exploited in the wild. It is in the CISA KEV catalog, so attackers are actively using it, not just researchers. It is reachable over the network with no authentication and no user interaction, which is the most dangerous profile. Patch this on priority and confirm the fix holds.
Add a field note or remediationoptional
Related CVEs
Same weakness: CWE-706.
- CVE-2020-15505CRIT 9.8KEVEPSS 100%
A remote code execution vulnerability in MobileIron Core & Connector versions 10.3.0.3 and earlier, 10.4.0.0, 10.4.0.1, 10.4.0.2, 10.4.0.3, 10.5.1.0, 10.5.2.0 and 10.6.0.0; and Sentry versions 9.7.2 and earlier, and 9.8.0; and Monitor and Reporting Database (RDB) version 2.0.0.1 and earlier that allows remote attackers to execute arbitrary code via unspecified vectors.
- CVE-2026-40912HIGH 8.2Real · low riskEPSS 1%
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's StripPrefixRegex middleware when used in combination with ForwardAuth, BasicAuth, or DigestAuth. The middleware matches the regex against the decoded URL path but uses the resulting byte length to slice the percent-encoded raw path. When a dot (or multiple dots) appears in the prefix portion of the URL, the raw path after stripping becomes a dot-segment (e.g. /./admin/secret). ForwardAuth receives this dot-segment path in X-Forwarded-Uri, which does not match the protected path patterns and therefore allows the request through. The backend then normalizes the dot-segment to the real path per RFC 3986 and serves the protected content An unauthenticated attacker can exploit this against any backend that performs dot-segment normalization. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.
- CVE-2026-62190HIGH 8.8Real · low riskEPSS 0%
OpenClaw versions before 2026.6.9 contain an authorization bypass vulnerability in the flock wrapper that allows lower-trust callers to execute or persist actions beyond their intended authorization. Attackers can leverage configured input paths to bypass durable exec approval binding and perform unauthorized operations when the affected feature is enabled.
- CVE-2026-13372HIGH 7.2Real · low riskEPSS 0%
Incorrect link resolution by display name in the custom PowerShell VPN editor in Devolutions Remote Desktop Manager 2026.2.5 through 2026.2.11 allows an authenticated attacker with write access to a shared workspace to execute a PowerShell script in another user's context via a display name collision with an existing VPN script link.
- CVE-2026-54022MED 5.3EPSS 0%
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, the ydoc:document:join Socket.IO handler checks note ownership only when the document_id starts with note: (colon). However, the YdocManager storage layer normalizes all document IDs by replacing colons with underscores (document_id.replace(":", "_")). An attacker can join a document room using note_<id> (underscore) instead of note:<id> (colon), bypassing the authorization check entirely while accessing the same underlying Yjs document. The server then returns the full document state, leaking the victim's private note contents. This vulnerability is fixed in 0.8.11.
- CVE-2026-16120MED 6.3EPSS 0%
A vulnerability was determined in nextlevelbuilder GoClaw up to 3.13.3-beta.3. This impacts the function matchesAllowlist/extractBin of the file internal/tools/exec_approval.go. Executing a manipulation can lead to incorrectly-resolved name. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.