CVE-2020-35561
No exploitation reported by the sources we read.
- Published2021-02-16
- WeaknessCWE-918
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
An issue was discovered MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2. There is an SSRF in the HA module allowing an unauthenticated attacker to scan for open ports.
Timeline
dates in UTC- 2021-02-1616:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-35561?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-35561?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.11 | ≤ 2.11.2 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.11 | ≤ 2.11.2 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.11 | ≤ 2.11.2 | no fix published | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
MB connect line mbCONNECT24, mymbCONNECT24
mymbCONNECT24: v2.6.1 and prior
Fix
- Vendor fix CISA ICSA-21-061-03 · 1 productMB connect line recommends users update mymbCONNECT24 and mbCONNECT24 to Version 2.71 or higher to mitigate many of these vulnerabilities. A future release will include mitigations for the remaining vulnerabilities found in CVE-2020-35567, CVE-2020-35565, and CVE-2020-35561.
- Mitigation from the vendor CISA ICSA-21-061-03 · 1 productCVE-2020-35561: Avoid vulnerable open ports on the LAN side of the server by using a firewall solution
- Mitigation from the vendor CISA ICSA-21-061-03 · 1 productAdditional details can be found on MB connect line's website.
Advisories and patches
- mbconnectline.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- CNACVSS 3.15.3read 2026-10-23
- NVDCVSS 3.15.3read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- NVDweakness (CWE)CWE-918read 2026-10-23
- FIRST EPSSEPSS score1.2 %2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Published
- 2021-02-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-35561?
Is CVE-2020-35561 actively exploited?
What is the CVSS score for CVE-2020-35561?
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Related vulnerabilities
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