CVE-2021-22927

mediumEPSS 0.008 · 57 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.84% (57th) EPSS

CVSS 5.8 · medium

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-20

A session fixation vulnerability exists in Citrix ADC and Citrix Gateway 13.0-82.45 when configured SAML service provider that could allow an attacker to hijack a session.

cvss

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

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.8–8.1

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-384USprimary

affected products (11)

Products and version ranges known to be affected.

n/a Citrix ADC, Citrix Gateway≤ Citrix ADC and Citrix Gateway 13.0-82.45 and later releases of 13.0enisa_euvdEU
n/a Citrix ADC, Citrix Gateway≤ Citrix ADC and NetScaler Gateway 11.1-65.22 and later releases of 11.1enisa_euvdEU
n/a Citrix ADC, Citrix Gateway≤ Citrix ADC and Citrix Gateway 12.1-62.27 and later releases of 12.1enisa_euvdEU
n/a Citrix ADC, Citrix Gateway≤ Citrix ADC 12.1-FIPS 12.1-55.247 and later releases of 12.1-FIPSenisa_euvdEU
citrix application delivery controller firmware11.1 → 11.1-65.22nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware12.1 → 12.1-55.238nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware12.1 → 12.1-62.27nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware13.0 → 13.0-82.45nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix gateway12.1 → 12.1-62.27nvdUScpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
citrix gateway13.0 → 13.0-82.45nvdUScpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
citrix netscaler gateway11.1 → 11.1-65.22nvdUScpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*

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 2021-08-05modified 2026-06-17

related (488)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-49410US	—	—	—	—
CVE-2026-55682US	—	—	—	—
CVE-2026-107421US	—	—	—	—
CVE-2026-93909US	critical	—	—	—
CVE-2026-63161US	high	—	—	—

+483 more

references (4)

External citations — patches, advisories, analysis.

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