GE Multilink Use of Hard-coded Cryptographic Key
GE Multilink ML800, ML1200, ML1600, and ML2400 switches with firmware 4.2.1 and earlier and Multilink ML810, ML3000, and ML3100 switches with firmware 5.2.0 and earlier use the same RSA private key across different customers' installations, which makes it easier for remote attackers to obtain the cleartext content of network traffic by reading this key from a firmware image and then sniffing the network.
- Published
- Jan 16, 2015
- Updated
- Jun 16, 2026
- EPSS
- 2.4% · 84th percentile
- CWE
- CWE-321
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.4%
CNA vs NVD score
- NVD
- 5.0
- CNA · icscert
- 10.0
- 5.0 point gap
AV:N/AC:L/Au:N/C:C/I:C/A:C
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| ge | multilink ml3100 firmware | cpe:2.3:o:ge:multilink_ml3100_firmware |
| ge | multilink ml3100 | cpe:2.3:h:ge:multilink_ml3100 |
| ge | multilink ml3000 firmware | cpe:2.3:o:ge:multilink_ml3000_firmware |
| ge | multilink ml3000 | cpe:2.3:h:ge:multilink_ml3000 |
| ge | multilink ml810 firmware | cpe:2.3:o:ge:multilink_ml810_firmware |
| ge | multilink ml810 | cpe:2.3:h:ge:multilink_ml810 |
| ge | multilink ml1600 firmware | cpe:2.3:o:ge:multilink_ml1600_firmware |
| ge | multilink ml1600 | cpe:2.3:h:ge:multilink_ml1600 |
| ge | multilink ml800 firmware | cpe:2.3:o:ge:multilink_ml800_firmware |
| ge | multilink ml800 | cpe:2.3:h:ge:multilink_ml800 |
| ge | multilink ml2400 firmware | cpe:2.3:o:ge:multilink_ml2400_firmware |
| ge | multilink ml2400 | cpe:2.3:h:ge:multilink_ml2400 |
and 2 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- ge multilink ml1200all versions
- ge multilink ml1200 firmwareup to 4.2.1 inclusive
- ge multilink ml1600all versions
- ge multilink ml1600 firmwareup to 4.2.1 inclusive
- ge multilink ml2400all versions
- ge multilink ml2400 firmwareup to 4.2.1 inclusive
- ge multilink ml3000all versions
- ge multilink ml3000 firmwareup to 5.2.0 inclusive
- ge multilink ml3100all versions
- ge multilink ml3100 firmwareup to 5.2.0 inclusive
- ge multilink ml800all versions
- ge multilink ml800 firmwareup to 4.2.1 inclusive
- ge multilink ml810all versions
- ge multilink ml810 firmwareup to 5.2.0 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.
GE ML810/3000/3100 series switch
- up to and including 5.2.0affected
GE Multilink ML800/1200/1600/2400
- up to and including 4.2.1affected
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Eireann LeverettIOActivefinder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-321 · Use of Hard-coded Cryptographic KeyCVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.gedigitalenergy.com/products/support/multilink/MLSB1214.pdf
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2015/icsa-15-013-04a.json
- www.cisa.gov/news-events/ics-advisories/icsa-15-013-04a
- ics-cert.us-cert.gov/advisories/ICSA-15-013-04
Vendor advisories and official records. Exploit/PoC links are deliberately left out.