CVE-2021-39290

highpriority · track · 40EPSS 0.015 · 75 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.53% (75th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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, NB2700, NB2710, NB2800, NB2810, NB3700, NB3701, NB3710, NB3711, NB3720, and NB3800.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-384USprimary

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
netmodule netmodule router software< 4.3.0.113nvdUScpe:2.3:a:netmodule:netmodule_router_software:*:*:*:*:*:*:*:*
netmodule netmodule router software4.4.0.0 → 4.4.0.111nvdUScpe:2.3:a:netmodule:netmodule_router_software:*:*:*:*:*:*:*:*
netmodule netmodule router software4.5.0.0 → 4.5.0.105nvdUScpe:2.3:a:netmodule:netmodule_router_software:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-08-23modified 2026-06-17

related (609)

Related entries.

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Session fixation vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack web sessions via the PHPSESSID parameter.
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+604 more

references (7)

External citations — patches, advisories, analysis.

https://packetstormsecurity.com/files/163892/NetModule-Router-Software-Password-Handling-Session-Fixation.html cnnvd
https://seclists.org/fulldisclosure/2021/Aug/22 cnnvd
https://www.netmodule.com cnnvd
https://seclists.org/fulldisclosure/2021/Aug/22 enisa_euvd
https://www.netmodule.com enisa_euvd
https://seclists.org/fulldisclosure/2021/Aug/22ExploitMailing ListThird Party Advisorynvd
https://www.netmodule.comVendor Advisorynvd

scry

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