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01 Record

CVE-2021-39290

Certain NetModule devices allow Limited Session Fixation via PHPSESSID. These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are affected: NB800, NB1600, NB1601, NB1800, NB1810,

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Certain NetModule devices allow Limited Session Fixation via PHPSESSID. These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are affected: NB800, NB1600, NB1601, NB1800, NB1810,

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.52% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 74.2% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-08-23 04:35Z5 YR AGO
Last updated
2024-08-04 02:06Z2 YR AGO
Reserved
2021-08-18
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
e2b267e9ca40467d1dc765b45189fb85b0b9a8afa7d450d4708c344706176f8f

05 Affected products

VendorProductVersionsPlatforms
netmodulenb1600Not specified—
netmodulenb1601Not specified—
netmodulenb1800Not specified—
netmodulenb1810Not specified—
netmodulenb2700Not specified—
netmodulenb2710Not specified—
netmodulenb2800Not specified—
netmodulenb2810Not specified—
netmodulenb3700Not specified—
netmodulenb3701Not specified—
netmodulenb3710Not specified—
netmodulenb3711Not specified—
netmodulenb3720Not specified—
netmodulenb3800Not specified—
netmodulenb800Not specified—
netmodulenetmodule_router_softwareNot specified—

06 References