Zyxel Vulnerabilities

Timeline

The analysis of the timeline helps to identify the required approach and handling of single vulnerabilities and vulnerability collections. This overview makes it possible to see less important slices and more severe hotspots at a glance. Initiating immediate vulnerability response and prioritizing of issues is possible.

Type

The moderation team is working with the threat intelligence team to categorize software that is affected by security vulnerabilities. This helps to illustrate the assignment of these categories to determine the most affected software types.

Product

ZyXEL CloudCNM SecuManager37
Zyxel USG FLEX32
Zyxel ATP30
Zyxel VPN28
Zyxel USG FLEX 5013

Grouping vulnerabilities by products helps to get an overview. This makes it possible to determine an homogeneous landscape or the most important hotspots in heterogeneous landscapes.

Remediation

Official Fix41
Temporary Fix1
Workaround22
Unavailable24
Not Defined170

Vendors and researchers are eager to find countermeasures to mitigate security vulnerabilities. These can be distinguished between multiple forms and levels of remediation which influence risks differently.

Exploitability

High21
Functional3
Proof-of-Concept29
Unproven9
Not Defined196

Researcher and attacker which are looking for security vulnerabilities try to exploit them for academic purposes or personal gain. The level and quality of exploitability can be distinguished to determine simplicity and strength of attacks.

Access Vector

Not Defined0
Physical1
Local19
Adjacent37
Network201

The approach a vulnerability it becomes important to use the expected access vector. This is typically via the network, local, or physically even.

Authentication

Not Defined0
High12
Low73
None173

To exploit a vulnerability a certail level of authentication might be required. Vulnerabilities without such a requirement are much more popular.

User Interaction

Not Defined0
Required39
None219

Some attack scenarios require some user interaction by a victim. This is typical for phishing, social engineering and cross site scripting attacks.

C3BM Index

Our unique C3BM Index (CVSSv3 Base Meta Index) cumulates the CVSSv3 Meta Base Scores of all entries over time. Comparing this index to the amount of disclosed vulnerabilities helps to pinpoint the most important events.

CVSSv3 Base

≤10
≤20
≤30
≤410
≤541
≤645
≤748
≤863
≤929
≤1022

The Common Vulnerability Scoring System (CVSS) is an industry standard to define the characteristics and impacts of security vulnerabilities. The base score represents the intrinsic aspects that are constant over time and across user environments. Our unique meta score merges all available scores from different sources to aggregate to the most reliable result.

CVSSv3 Temp

≤10
≤20
≤30
≤413
≤546
≤644
≤753
≤852
≤931
≤1019

The Common Vulnerability Scoring System (CVSS) uses temp scores to reflect the characteristics of a vulnerability that may change over time but not across user environments. This includes reporting confidence, exploitability and remediation levels. We do also provide our unique meta score for temp scores, even though other sources rarely publish them.

VulDB

≤10
≤20
≤37
≤426
≤540
≤651
≤737
≤859
≤916
≤1022

The moderation team is always defining the base vector and base score for an entry. These and all other available scores are used to generate the meta score.

NVD

≤10
≤20
≤30
≤40
≤52
≤624
≤714
≤815
≤921
≤1027

The National Vulnerability Database (NVD) is also defining CVSS vectors and scores. These are usually not complete and might differ from VulDB scores.

CNA

≤10
≤20
≤30
≤42
≤56
≤615
≤713
≤825
≤916
≤1014

A CVE Numbering Authority (CNA) is responsible for assigning new CVE entries. They might also include a CVSS score. These are usually not complete and might differ from VulDB scores.

Vendor

≤10
≤20
≤30
≤40
≤50
≤60
≤70
≤80
≤90
≤100

Some vendors are willing to publish their own CVSS vectors and scores for vulnerabilities in their products. The coverage varies from vendor to vendor.

Research

≤10
≤20
≤30
≤40
≤50
≤60
≤70
≤80
≤90
≤100

There are sometimes also security researcher which provide their own CVSS vectors and scores for vulnerabilities they have found and published.

Exploit 0-day

<1k3
<2k17
<5k142
<10k80
<25k16
<50k0
<100k0
≥100k0

The moderation team is working with the threat intelligence team to determine prices for exploits. Our unique algorithm is used to identify the 0-day prices for an exploit, before it got distributed or became public. Calculated prices are aligned to prices disclosed by vulnerability broker and compared to prices we see on exploit markets.

Exploit Today

<1k117
<2k55
<5k58
<10k25
<25k3
<50k0
<100k0
≥100k0

The 0-day prices do not consider time-relevant factors. The today price does reflect price impacts like disclosure of vulnerability details, alternative exploits, availability of countermeasures. These dynamic aspects might decrease the exploit prices over time. Under certain circumstances this happens very fast.

Exploit Market Volume

Our unique calculation of exploit prices makes it possible to forecast the expected exploit market volume. The calculated prices for all possible 0-day expoits are cumulated for this task. Comparing the volume to the amount of disclosed vulnerabilities helps to pinpoint the most important events.

🔴 CTI Activities

Our unique Cyber Threat Intelligence aims to determine the ongoing research of actors to anticipiate their acitivities. Observing exploit markets on the Darknet, discussions of vulnerabilities on mailinglists, and exchanges on social media makes it possible to identify planned attacks. Monitored actors and activities are classified whether they are offensive or defensive. They are also weighted as some actors are well-known for certain products and technologies. And some of their disclosures might contain more or less details about technical aspects and personal context. The world map highlights active actors in real-time.

Affected Products (152): 642R (1), AP Configurator (1), APT (1), ARMOR Z1 (2), ARMOR Z2 (2), ATP (30), ATP500 (1), AX7501-B0 (2), Armor X1 WAP6806 (1), Billion 5200W-T (6), C1000Z (1), CloudCNM SecuManager (37), DX5401-B0 (2), EMG2926 (1), FR1000Z (1), GS1200 (1), GS1510-16 (1), GS1900 (9), GS1900-8 (3), GS1900-8HP (1), GS1900-24 (1), GS1900-24EP (1), GS1920-24v2 (1), LTE3301-M209 (1), LTE3316-M604 (1), LTE4506-M606 (1), Multy X AC3000 (1), NAS (1), NAS326 (12), NAS 326 (5), NAS520 (2), NAS540 (4), NAS542 (10), NBG-418N (3), NBG-418N v2 (7), NBG-6604 (1), NBG2105 (1), NBG6604 (3), NBG6716 (1), NBG6818 (1), NBG7510 (1), NBG7815 (1), NR7101 (5), NSA221 (2), NSA310 (2), NSA320S (2), NSA325 (2), NSA325 V2 (2), NSG (1), NWA-1100-NH (2), NWA50AX (3), NWA110AX (1), NWA1123-NI (1), NWA3560-N (1), O2 DSL Router Classic (1), P-330W router (2), P-335WT router (1), P-660HN-51 (1), P-660HN-T1 V2 (1), P-660HW (6), P-660HW-T1 (3), P-660HW D3 (1), P-660RU-T1 (1), P-663HN-51 (1), P-870H-51 (1), P-1302-T10D v3 (1), P-2602HW-D1A (3), P660 (1), P660HN-T1A (4), P660HN-T v1 (2), P660HN-T v2 (2), P660RT2 (2), P1302-T10 v3 (1), P2000W Wifi Phone (1), P8702N (1), PK5001Z (1), PMG2005-T20B (1), PMG5318-B20A (4), PMG5318-B20A GPON (1), Prestige (3), Prestige 310 (1), Prestige 642R (1), Prestige 642R-I (1), Prestige 660H-61 (1), Prestige 2000w V.1voip Wi-fi Phone (2), Prestige Router (1), Q1000 (1), SBG-3300 (2), SBG3300-N000 (1), SBG3300-NB00 (1), SBG3500-N000 (1), SecuExtender SSL VPN Client (1), UAG (2), USG (13), USG20 (2), USG20-VPN (11), USG40 (1), USG50 (1), USG1900 (1), USG FLEX (32), USG FLEX 20 (1), USG FLEX 50 (14), USG FLEX 100 (3), USG FLEX 200 (3), USG FLEX 500 (3), USG FLEX 700 (3), USG Flex (2), USG ZyWALL (2), UTM (1), VMG1312-B10A (1), VMG1312-B10D (1), VMG1312-B30A (1), VMG1312-B30B (1), VMG3312 B10B (1), VMG3312-B10B (1), VMG3312-B10B DSL-491HNU-B1B (1), VMG3312-T20A (2), VMG4380-B10A (1), VMG5313-B30B (2), VMG8324-B10A (1), VMG8924-B10A (1), VMG8924-B30A (1), VPN (29), VPN2S (2), VPN On-premise (1), VPN Orchestrator (1), VSG1435-B101 DSL CPEs (1), WAC500 (3), WAX300H (3), WBE660S (3), WRE6505 (1), WSQ20 (1), WSQ50 (1), WSQ60 (1), WSR30 (1), Wireless N300 NetUSB (4), XGS2210-52HP (1), XGS2220-30 (1), XMG1930-30 (1), XS1930-10 (1), ZyNOS (12), ZyWALL (8), ZyWALL 2 Plus Internet Security Appliance (1), ZyWALL 10 (1), ZyWALL 100 (1), ZyWALL310 (1), ZyWALL1100 (1), ZyWALL USG (2), ZyWall (2), ZynOS (1), Zywall (3), Zywall 2 (4)

Link to Vendor Website: https://www.zyxel.com/

PublishedBaseTempVulnerabilityProdExpRemEPSSCTICVE
02/20/20246.56.5Zyxel ATP/USG FLEX RAR File null pointer dereferenceUnknownNot DefinedNot Defined0.000440.07CVE-2023-6397
02/20/20245.75.7Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN IPSec VPN format stringNetwork Encryption SoftwareNot DefinedNot Defined0.000430.04CVE-2023-6399
02/20/20247.27.0Zyxel ATP os command injectionNetwork Encryption SoftwareNot DefinedOfficial Fix0.000520.03CVE-2023-6398
02/20/20248.18.1Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN IPSec VPN format stringNetwork Encryption SoftwareNot DefinedNot Defined0.000430.04CVE-2023-6764
01/30/20247.27.2Zyxel NAS326/NAS542 URL os command injectionUnknownNot DefinedNot Defined0.000500.04CVE-2023-5372
11/30/20236.46.4Zyxel NAS326/NAS542 URL improper authenticationUnknownNot DefinedNot Defined0.000930.02CVE-2023-35137
11/30/20239.89.8Zyxel NAS326/NAS542 WSGI Server os command injectionUnknownNot DefinedNot Defined0.001000.06CVE-2023-4474
11/30/20238.88.8Zyxel NAS326/NAS542 WSGI Server os command injectionUnknownNot DefinedNot Defined0.000500.00CVE-2023-37928
11/30/20238.88.8Zyxel NAS326/NAS542 CGI Program os command injectionUnknownNot DefinedNot Defined0.000520.00CVE-2023-37927
11/30/20239.89.8Zyxel NAS326/NAS542 HTTP POST Request show_zysync_server_contents os command injectionUnknownNot DefinedNot Defined0.000580.04CVE-2023-35138
11/30/20239.89.8Zyxel NAS326/NAS542 Web Server os command injectionUnknownNot DefinedNot Defined0.000680.04CVE-2023-4473
11/28/20235.25.2Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN/VPN CGI Program cross site scriptingNetwork Encryption SoftwareNot DefinedNot Defined0.000460.02CVE-2023-35139
11/28/20234.44.4Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN/VPN Web GUI privileges managementNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-5650
11/28/20234.44.4Zyxel ATP Debug CLI Command privileges managementNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-37925
11/28/20234.44.4Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN CLI Command buffer overflowNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-4397
11/28/20234.44.4Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN/VPN Configuration File information disclosureNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-35136
11/28/20235.55.5Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN/VPN CLI Command buffer overflowNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-37926
11/28/20234.44.4Zyxel USG FLEX/VPN Hotspot privileges managementNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-5960
11/28/20234.44.4Zyxel ATP Debug CLI Command privileges managementNetwork Encryption SoftwareNot DefinedNot Defined0.000420.00CVE-2023-5797
11/28/20237.57.5Zyxel ATP/USG FLEX/USG FLEX 50/USG20-VPN/VPN IKE Packet integer overflowNetwork Encryption SoftwareNot DefinedNot Defined0.000520.00CVE-2023-4398
11/20/20237.87.8ZyXEL SecuExtender SSL VPN Client CREATE Message out-of-bounds writeNetwork Encryption SoftwareNot DefinedNot Defined0.000420.08CVE-2023-5593
11/18/20236.76.7Zyxel GS1900-8HP/GS1900-8 privileges managementUnknownNot DefinedNot Defined0.000420.05CVE-2022-45853
11/07/20234.44.4Zyxel GS1900-24EP Setting privileges managementUnknownNot DefinedNot Defined0.000420.00CVE-2023-35140
09/28/20236.36.1ZyXEL PMG2005-T20B login.asp buffer overflowRouter Operating SystemProof-of-ConceptNot Defined0.000520.00CVE-2023-43314
08/14/20235.45.4ZyXEL XGS2220-30/XMG1930-30/XS1930-10 Frames denial of serviceUnknownNot DefinedNot Defined0.000440.00CVE-2023-28768

233 more entries are not shown

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