Honeywell NVR devices allow remote attackers to create a user account in the admin group by leveraging access to a guest account to obtain a
Honeywell NVR devices allow remote attackers to create a user account in the admin group by leveraging access to a guest account to obtain a session ID, and then sending that session ID in a userManager.addUser request to the /RPC2 URI. The attacker can login to the device with that new user account to fully control the device.
- Published
- Sep 11, 2017
- Updated
- Jun 16, 2026
- EPSS
- 3.7% · 89th percentile
- CWE
- CWE-384
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Report tools
Action score
33
Monitor
Low priority for now.
- CVSS
- 32 / 40 · 8.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.7%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| honeywell | enterprise dvr firmware | cpe:2.3:o:honeywell:enterprise_dvr_firmware |
| honeywell | enterprise dvr | cpe:2.3:h:honeywell:enterprise_dvr |
| honeywell | maxpro nvr hybrid se firmware | cpe:2.3:o:honeywell:maxpro_nvr_hybrid_se_firmware |
| honeywell | maxpro nvr hybrid se | cpe:2.3:h:honeywell:maxpro_nvr_hybrid_se |
| honeywell | maxpro nvr hybrid xe firmware | cpe:2.3:o:honeywell:maxpro_nvr_hybrid_xe_firmware |
| honeywell | maxpro nvr hybrid xe | cpe:2.3:h:honeywell:maxpro_nvr_hybrid_xe |
| honeywell | maxpro nvr se firmware | cpe:2.3:o:honeywell:maxpro_nvr_se_firmware |
| honeywell | maxpro nvr se | cpe:2.3:h:honeywell:maxpro_nvr_se |
| honeywell | maxpro nvr xe firmware | cpe:2.3:o:honeywell:maxpro_nvr_xe_firmware |
| honeywell | maxpro nvr xe | cpe:2.3:h:honeywell:maxpro_nvr_xe |
| honeywell | fusion iv rev c firmware | cpe:2.3:o:honeywell:fusion_iv_rev_c_firmware |
| honeywell | fusion iv rev c | cpe:2.3:h:honeywell:fusion_iv_rev_c |
and 2 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- honeywell enterprise dvr firmwareall versions
- honeywell fusion iv rev c firmwareall versions
- honeywell maxpro nvr hybrid se firmwareall versions
- honeywell maxpro nvr hybrid xe firmwareall versions
- honeywell maxpro nvr pe firmwareall versions
- honeywell maxpro nvr se firmwareall versions
- honeywell maxpro nvr xe firmwareall versions
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
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
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 |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:5 | 2017-09-08 |
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.
- First PoC-3 d
- Published
- TodaySep 30, 2026+3306 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.
- Special conditions such as timing or configuration are required.
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
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-384 · Session FixationCVSS vector
CVSS:3.0/AV:N/AC:H/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.
Attack patterns (CAPEC)
- Session Credential Falsification through ForgingCAPEC-196likelihood: Medium · Medium
- Exploitation of Trusted IdentifiersCAPEC-21likelihood: High · High
- Accessing/Intercepting/Modifying HTTP CookiesCAPEC-31likelihood: High · High
- Manipulating Opaque Client-based Data TokensCAPEC-39likelihood: High · Medium
- Session Credential Falsification through PredictionCAPEC-59likelihood: High · High
- Reusing Session IDs (aka Session Replay)CAPEC-60likelihood: High · High
- Session FixationCAPEC-61likelihood: Medium · High
ATT&CK techniques
- Access Token ManipulationT1134
- Access Token Manipulation:Token Impersonation/TheftT1134.001
- Access Token Manipulation: Create Process with TokenT1134.002
- Access Token Manipulation: Make and Impersonate TokenT1134.003
- Steal Application Access TokenT1528
- Steal Web Session CookieT1539
- Use Alternate Authentication Material:Web Session CookieT1550.004
- Forge Web CredentialsT1606
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.