Matrix Unleashes A New Widespread DDoS Campaign
CVE-2018-9995: Targeting Digital Video Recorders (DVRs) to exploit weaknesses in certain DVR devices that use the Hi3520 platform.
2 passages name itOriginal (opens in a new tab) ↗
CVE-2018-9995 Public exploit EPSS 82.3%
TBK DVR4104 and DVR4216 devices, as well as Novo, CeNova, QSee, Pulnix, XVR 5 in 1, Securus, Night OWL, DVR Login, HVR…
Summary
The TBK DVR4104 and DVR4216 devices, along with re-branded variants such as Novo, CeNova, QSee, Pulnix, XVR 5 in 1, Securus, Night OWL, DVR Login, HVR Login, and MDVR Login, contain an authentication bypass flaw in their web interface.
Official description · CVE.org
TBK DVR4104 and DVR4216 devices, as well as Novo, CeNova, QSee, Pulnix, XVR 5 in 1, Securus, Night OWL, DVR Login, HVR Login, and MDVR Login, which run re-branded versions of the original TBK DVR4104 and DVR4216 series, allow remote attackers to bypass authentication via a "Cookie: uid=admin" header, as demonstrated by a device.rsp?opt=user&cmd=list request that provides credentials within JSON data in a response.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
76.0 / 100
- Exploited
- Yes, in VulnCheck KEV
- Reports
- 1
- Tactics
- 4/15
How an attack unfolds
Based on MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. mappings. Select a step to see the evidence.How attackers get in
What they do
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 23 months after disclosure. Public exploit code (PoC-in-GitHub) appeared 19 days after disclosure.
- Disclosedday 0
- Public exploit codePoC-in-GitHub+19 days
- First seen exploitedVulnCheck KEV evidence+23 mo
- Named in a threat reportaquasec.com+7 yrs
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
2 TechniqueOne specific attacker behaviour in MITRE ATT&CK, such as T1190 “Exploit Public-Facing Application”. IDs with a dot, like T1059.004, are sub-techniques., grouped by TacticThe attacker’s goal at a stage of an attack in MITRE ATT&CK, such as Initial Access or Persistence. Each technique belongs to one or more tactics. in kill-chain order, 2 cited passages 2Initial AccessTA0001
Valid Accounts T1078 Medium Confidence (technique links)How sure Patchfirst is that an ATT&CK technique applies to this CVE. High and medium links are shown by default; low ones come from early or generic mappings, text matching, or contradict the CVE’s details. also Persistence, Privilege Escalation, Stealth
AI mapping from the description · primary impact
bypass yields credentials and valid admin access
provides credentials within JSON data in a response
Exploit Public-Facing Application T1190 Medium Confidence (technique links)How sure Patchfirst is that an ATT&CK technique applies to this CVE. High and medium links are shown by default; low ones come from early or generic mappings, text matching, or contradict the CVE’s details.
AI mapping from the description · how it is exploited
remote unauthenticated exploit of exposed device interface
allow remote attackers to bypass authentication via a "Cookie: uid=admin" header
Detection
0 rules for this CVE · 205 general rules for its techniquesRules for this CVE
0Sigma ruleAn open, vendor-neutral detection rule for log data. Security teams convert Sigma rules into searches for their own SIEM. that reference CVE-2018-9995 directly.CVE-specific rules are not available in this build. Search SigmaHQ ↗
General rules for this CVE’s techniques
These detect the technique in general, not this specific vulnerability.
Exploit Public-Facing ApplicationT1190149 general rules
- Arcadyan Router Exploitationscriticaltest
- Citrix ADS Exploitation CVE-2020-8193 CVE-2020-8195criticaltest
- Citrix Netscaler Attack CVE-2019-19781criticaltest
- Confluence Exploitation CVE-2019-3398criticaltest
- CVE-2010-5278 Exploitation Attemptcriticaltest
- CVE-2020-0688 Exchange Exploitation via Web Logcriticaltest
- CVE-2020-10148 SolarWinds Orion API Auth Bypasscriticaltest
- CVE-2020-5902 F5 BIG-IP Exploitation Attemptcriticaltest
Valid AccountsT107856 general rules
- Win Susp Computer Name Containing Samtheadmincriticaltest
- Account Created And Deleted Within A Close Time Framehightest
- Activity From Anonymous IP Addresshightest
- Atypical Travelhightest
- Azure AD Threat Intelligencehightest
- Azure Subscription Permission Elevation Via AuditLogshightest
- External Remote SMB Logon from Public IPhightest
- Impossible Travelhightest
Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.
What security researchers reported
Named in 1 threat report1 reportAqua SecurityNov 2024
Reports are matched by finding the exact id CVE-2018-9995 in their text; nobody has reviewed the match. One passage is shown per report, at most 320 characters, linked to the original.
Also mentioned in 8 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Spam “Broken Seal” DocuSign-themed Delivery w/Fileless Process Hollowing (Zeppelin/Bloat-A) by msudosos22 Mar 2026
- Spam “Broken Seal” DocuSign-themed Delivery w/Fileless Process Hollowing (Zeppelin/Bloat-A) by msudosos22 Mar 2026
- “Broken Seal” DocuSign-themed Delivery with Fileless Process Hollowing (Zeppelin/Bloat-A)13 Feb 2026
- Matrix Unleashes A New Widespread DDoS Campaign27 Nov 2024
- IOC's found on my pesonal devices; week starting 08/14/236 Dec 2023
- IOC's found on my pesonal devices; week starting 08/14/2317 Aug 2023
- 2 more on OTX