CVE-2021-21916

mediumpriority · track · 35EPSS 0.014 · 73 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.43% (73rd) EPSS

CVSS 6.5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

An exploitable SQL injection vulnerability exist in the ‘group_list’ page of the Advantech R-SeeNet 2.4.15 (30.07.2021). A specially-crafted HTTP request at 'description_filter’ parameter. An attacker can make authenticated HTTP requests to trigger this vulnerability. This can be done as any authenticated user or through cross-site request forgery.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationR-SeeNetcisa_csaf_ot
Advantech recommends updating to Version 2.4.17 or later.
https://icr.advantech.cz/products/software/r-seenet

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.07.7highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Nsecondary · talos-cna@cisco.com USexploitability 3.1 · impact 4

v3.08.8highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US

v3.07.7highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Nsecondary · ENISA EU

v3.17.7highAV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/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-89USprimaryCWE-269USCWE-89US

affected products (5)

Products and version ranges known to be affected.

R-SeeNet: Versions 2.4.16 and priorall versionscisa_csaf_otUS
Advantech R-SeeNet≤ 2.4.16cisa_csaf_otUS
n/a Advantech≤ Advantech R-SeeNet Advantech R-SeeNet 2.4.15 (30.07.2021)enisa_euvdEU
Advantech Co., Ltd R-SeeNet≤ 2.4.15 (30.07.2021)fstec_bduRU
advantech r-seenet= 2.4.15nvdUScpe:2.3:a:advantech:r-seenet:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-348-01Advantech R-SeeNet2021-12-14icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow authenticated users to perform a local privilege escalation and retrieve any information from the product 's database.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2021-12-22modified 2026-06-17

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+23877 more

references (7)

External citations — patches, advisories, analysis.

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