Delta Industrial Automation COMMGR from Delta Electronics versions 1.08 and prior with accompanying PLC Simulators (DVPSimulator EH2, EH3, E
Delta Industrial Automation COMMGR from Delta Electronics versions 1.08 and prior with accompanying PLC Simulators (DVPSimulator EH2, EH3, ES2, SE, SS2 and AHSIM_5x0, AHSIM_5x1) utilize a fixed-length stack buffer where an unverified length value can be read from the network packets via a specific network port, causing the buffer to be overwritten. This may allow remote code execution, cause the application to crash, or result in a denial-of-service condition in the application server.
- Published
- Jun 26, 2018
- Updated
- Jun 16, 2026
- EPSS
- 68.6% · 99th percentile
- CWE
- CWE-121
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Report tools
Action score
60
This week
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- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 21 / 30 · 68.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| deltaww | commgr | cpe:2.3:a:deltaww:commgr |
| deltaww | dvpsimulator ahsim 5x0 | cpe:2.3:h:deltaww:dvpsimulator_ahsim_5x0 |
| deltaww | dvpsimulator ahsim 5x1 | cpe:2.3:h:deltaww:dvpsimulator_ahsim_5x1 |
| deltaww | dvpsimulator eh2 | cpe:2.3:h:deltaww:dvpsimulator_eh2 |
| deltaww | dvpsimulator es2 | cpe:2.3:h:deltaww:dvpsimulator_es2 |
| deltaww | dvpsimulator h3 | cpe:2.3:h:deltaww:dvpsimulator_h3 |
| deltaww | dvpsimulator se | cpe:2.3:h:deltaww:dvpsimulator_se |
| deltaww | dvpsimulator ss2 | cpe:2.3:h:deltaww:dvpsimulator_ss2 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- deltaww commgrup to 1.08 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.
ICS-CERT Delta Industrial Automation COMMGR and accompanying PLC Simulators (DVPSimulator EH2, EH3, ES2, SE, SS2 and AHSIM_5x0, AHSIM_5x1)
- Version 1.08 and prioraffected
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
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×3
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2018-07-02 |
| Exploit-DB entry | remote | 2018-10-09 |
| Exploit-DB entry | remote | 2018-10-09 |
| Metasploit module | exploit/windows/scada/delta_ia_commgr_bofDelta Electronics Delta Industrial Automation COMMGR 1.08 Stack Buffer Overflowexploit | 2018-07-02 |
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.
- Published
- First PoC+5 d
- Metasploit+5 d
- TodaySep 29, 2026+3017 d
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.
No credits in the CNA record.
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
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-121 · Stack-based Buffer OverflowCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
Vendor advisories and official records. Exploit/PoC links are deliberately left out.