CVE-2022-26531

CVSS V2 Medium 4.6 CVSS V3 High 7.8
Description
Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload.
Overview
  • CVE ID
  • CVE-2022-26531
  • Assigner
  • security@zyxel.com.tw
  • Vulnerability Status
  • Modified
  • Published Version
  • 2022-05-24T06:15:09
  • Last Modified Date
  • 2022-06-19T19:15:07
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:* 1 OR 4.30 5.21
cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:* 1 OR 4.30 5.21
cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:* 1 OR 4.30 5.21
cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:* 1 OR 4.30 5.21
cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:* 1 OR 4.32 5.21
cpe:2.3:h:zyxel:atp100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:* 1 OR 4.32 5.21
cpe:2.3:h:zyxel:atp100w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:* 1 OR 4.32 5.21
cpe:2.3:h:zyxel:atp200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:* 1 OR 4.32 5.21
cpe:2.3:h:zyxel:atp500:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:* 1 OR 4.32 5.21
cpe:2.3:h:zyxel:atp700:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:* 1 OR 4.32 5.21
cpe:2.3:h:zyxel:atp800:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_110_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_110:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_1100_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_1100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_1900_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_1900:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_20w_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_20w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_2200-vpn_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_2200-vpn:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_310_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_310:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_40_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_40:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_40w_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_40w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_60_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_60:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_60w_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg_60w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:* 1 OR 4.50 5.21
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:* 1 OR 4.50 5.21
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:* 1 OR 4.50 5.21
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:* 1 OR 4.50 5.21
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:* 1 OR 4.50 5.21
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg200_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg20_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg20:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg210_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg210:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg2200_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg2200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg300_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg300:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg310_firmware:*:*:*:*:*:*:*:* 1 OR 4.09 4.71
cpe:2.3:h:zyxel:usg310:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nsg300_firmware:*:*:*:*:*:*:*:* 1 OR 1.00 1.33
cpe:2.3:o:zyxel:nsg300_firmware:1.33:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg300_firmware:1.33:patch1:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg300_firmware:1.33:patch2:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg300_firmware:1.33:patch3:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg300_firmware:1.33:patch4:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:nsg300:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nsg100_firmware:*:*:*:*:*:*:*:* 1 OR 1.00 1.33
cpe:2.3:o:zyxel:nsg100_firmware:1.33:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg100_firmware:1.33:patch1:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg100_firmware:1.33:patch2:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg100_firmware:1.33:patch3:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg100_firmware:1.33:patch4:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:nsg100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nsg50_firmware:*:*:*:*:*:*:*:* 1 OR 1.00 1.33
cpe:2.3:o:zyxel:nsg50_firmware:1.33:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg50_firmware:1.33:patch1:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg50_firmware:1.33:patch2:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg50_firmware:1.33:patch3:*:*:*:*:*:* 1 OR
cpe:2.3:o:zyxel:nsg50_firmware:1.33:patch4:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:nsg50:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nxc2500_firmware:*:*:*:*:*:*:*:* 1 OR 6.10\(aaig.3\)
cpe:2.3:h:zyxel:nxc2500:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nxc5500_firmware:*:*:*:*:*:*:*:* 1 OR 6.10\(aaos.3\)
cpe:2.3:h:zyxel:nxc5500:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nap203_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abfa.7\)
cpe:2.3:h:zyxel:nap203:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nap303_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abex.7\)
cpe:2.3:h:zyxel:nap303:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nap353_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abey.7\)
cpe:2.3:h:zyxel:nap353:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa50ax_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abyw.5\)
cpe:2.3:h:zyxel:nwa50ax:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa55axe_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abzl.5\)
cpe:2.3:h:zyxel:nwa55axe:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa90ax_firmware:*:*:*:*:*:*:*:* 1 OR 6.27\(accv.2\)
cpe:2.3:h:zyxel:nwa90ax:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa110ax_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abtg.2\)
cpe:2.3:h:zyxel:nwa110ax:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa210ax_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abtd.2\)
cpe:2.3:h:zyxel:nwa210ax:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa1123-ac-hd_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abin.6\)
cpe:2.3:h:zyxel:nwa1123-ac-hd:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa1123-ac-pro_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abhd.7\)
cpe:2.3:h:zyxel:nwa1123-ac-pro:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa1123acv3_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abvt.2\)
cpe:2.3:h:zyxel:nwa1123acv3:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa1302-ac_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abku.6\)
cpe:2.3:h:zyxel:nwa1302-ac:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:nwa5123-ac-hd_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abim.6\)
cpe:2.3:h:zyxel:nwa5123-ac-hd:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac500h_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abwa.2\)
cpe:2.3:h:zyxel:wac500h:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac500_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abvs.2\)
cpe:2.3:h:zyxel:wac500:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac5302d-s_firmware:*:*:*:*:*:*:*:* 1 OR 6.10\(abfh.10\)
cpe:2.3:h:zyxel:wac5302d-s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac5302d-sv2_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abvz.6\)
cpe:2.3:h:zyxel:wac5302d-sv2:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6103d-i_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(aaxh.7\)
cpe:2.3:h:zyxel:wac6103d-i:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6303d-s_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abgl.6\)
cpe:2.3:h:zyxel:wac6303d-s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6502d-e_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(aasd.7\)
cpe:2.3:h:zyxel:wac6502d-e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6502d-s_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(aase.7\)
cpe:2.3:h:zyxel:wac6502d-s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6503d-s_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(aasf.7\)
cpe:2.3:h:zyxel:wac6503d-s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6553d-s_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(aasg.7\)
cpe:2.3:h:zyxel:wac6553d-s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wac6552d-s_firmware:*:*:*:*:*:*:*:* 1 OR 6.25\(abio.7\)
cpe:2.3:h:zyxel:wac6552d-s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wax510d_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abtf.2\)
cpe:2.3:h:zyxel:wax510d:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wax610d_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abte.2\)
cpe:2.3:h:zyxel:wax610d:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wax630s_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abzd.2\)
cpe:2.3:h:zyxel:wax630s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:wax650s_firmware:*:*:*:*:*:*:*:* 1 OR 6.30\(abrm.2\)
cpe:2.3:h:zyxel:wax650s:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
http://packetstormsecurity.com/files/167464/Zyxel-Buffer-Overflow-Format-String-Command-Injection.html
http://seclists.org/fulldisclosure/2022/Jun/15
https://www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtml Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2022-26531
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-26531
History
Created Old Value New Value Data Type Notes
2022-05-24 07:00:05 Added to TrackCVE