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TI-2020-16929 Aliases CVE-2020-27861GHSA-jwqc-9f7p-v456

OS command injection in NETGEAR Orbi

Priority MEDIUM 42CWE-78Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.

Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.

Why it matters now

EPSS 0.02122 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
NETGEAROrbi2.5.1.16—No fix listedCNA
  • Orbi VendorNETGEAR Affected 2.5.1.16 Fixed in — No fix listed CNA

CPE configurations NVD · 71

CPEVersionsRoleVendor
cpe:2.3:o:netgear:cbk40_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:cbk40:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:cbk43_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:cbk43:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:cbr40:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:*before 1.0.1.82VulnerableNETGEAR
cpe:2.3:h:netgear:ex6200:v2:*:*:*:*:*:*:*v2Running onNETGEAR
cpe:2.3:o:netgear:ex7700_firmware:*:*:*:*:*:*:*:*before 1.0.0.210VulnerableNETGEAR
cpe:2.3:h:netgear:ex7700:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
  • cpe:2.3:o:netgear:cbk40_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:cbk40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:cbk43_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:cbk43:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:cbr40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:* Versions before 1.0.1.82 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:ex6200:v2:*:*:*:*:*:*:* Versions v2 Running on ·NETGEAR
  • cpe:2.3:o:netgear:ex7700_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.210 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:ex7700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
Show 61 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:netgear:ex8000_firmware:*:*:*:*:*:*:*:*before 1.0.1.224VulnerableNETGEAR
cpe:2.3:h:netgear:ex8000:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk12_firmware:*:*:*:*:*:*:*:*before 2.6.1.44VulnerableNETGEAR
cpe:2.3:h:netgear:rbk12:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk13_firmware:*:*:*:*:*:*:*:*before 2.6.1.44VulnerableNETGEAR
cpe:2.3:h:netgear:rbk13:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk14_firmware:*:*:*:*:*:*:*:*before 2.6.1.44VulnerableNETGEAR
cpe:2.3:h:netgear:rbk14:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk15_firmware:*:*:*:*:*:*:*:*before 2.6.1.44VulnerableNETGEAR
cpe:2.3:h:netgear:rbk15:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbr10_firmware:*:*:*:*:*:*:*:*before 2.6.1.44VulnerableNETGEAR
cpe:2.3:h:netgear:rbr10:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbs10_firmware:*:*:*:*:*:*:*:*before 2.6.1.44VulnerableNETGEAR
cpe:2.3:h:netgear:rbs10:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk20w_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:h:netgear:rbk20w:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk23w_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:h:netgear:rbk23w:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk20_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk20_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk20:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk22_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk22_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk22:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk23_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk23_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk23:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:h:netgear:rbr20:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbs20:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk30_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:h:netgear:rbk30:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk33_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:h:netgear:rbk33:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk40_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk40_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk40:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk43_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk43_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk43:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk43s_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk43s_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk43s:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk44_router_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:o:netgear:rbk44_satellite_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbk44:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbr40_firmware:*:*:*:*:*:*:*:*before 2.6.1.36VulnerableNETGEAR
cpe:2.3:h:netgear:rbr40:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:*before 2.6.1.38VulnerableNETGEAR
cpe:2.3:h:netgear:rbs40:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk50_firmware:*:*:*:*:*:*:*:*before 2.6.1.40VulnerableNETGEAR
cpe:2.3:h:netgear:rbk50:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk50v_firmware:*:*:*:*:*:*:*:*before 2.6.1.40VulnerableNETGEAR
cpe:2.3:h:netgear:rbk50v:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbk52w_firmware:*:*:*:*:*:*:*:*before 2.6.1.40VulnerableNETGEAR
cpe:2.3:h:netgear:rbk52w:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:*before 2.6.1.40VulnerableNETGEAR
cpe:2.3:h:netgear:rbr50:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:*before 2.6.1.40VulnerableNETGEAR
cpe:2.3:h:netgear:rbs50:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
  • cpe:2.3:o:netgear:ex8000_firmware:*:*:*:*:*:*:*:* Versions before 1.0.1.224 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:ex8000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk12_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.44 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk12:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk13_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.44 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk13:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk14_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.44 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk14:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk15_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.44 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk15:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbr10_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.44 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbr10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbs10_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.44 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbs10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk20w_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk20w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk23w_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk23w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk20_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk20_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk20:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk22_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk22_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk22:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk23_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk23_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk23:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbr20:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbs20:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk30_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk30:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk33_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk33:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk40_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk40_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk43_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk43_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk43:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk43s_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk43s_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk43s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk44_router_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:o:netgear:rbk44_satellite_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk44:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbr40_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.36 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbr40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.38 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbs40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk50_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.40 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk50:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk50v_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.40 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk50v:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbk52w_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.40 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbk52w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.40 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbr50:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:* Versions before 2.6.1.40 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:rbs50:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-27861
  2. 2026-10-03 Alias added: GHSA-jwqc-9f7p-v456

References

Advisory 2

  • TI-2024-18843 An information leak in the currentsetting.htm component of Netgear CBR40 2.5.0.28… CVSS 3.1HIGH 7.5
  • TI-2024-18842 An information leak in the debuginfo.htm component of Netgear CBR40 2.5.0.28, Netgear… CVSS 3.1MEDIUM 5.4
  • TI-2020-18244 Certain NETGEAR devices are affected by incorrect configuration of security settings. CVSS 3.1CRITICAL 9.4
  • TI-2020-18239 Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences