CASCACascade Atlas

Evidence dossier

CVE-2021-22894

CVE-2021-22894

74.9–90.4Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

A buffer overflow vulnerability exists in Pulse Connect Secure before 9.1R11.4 allows a remote authenticated attacker to execute arbitrary code as the root user via maliciously crafted meeting room.

State
PUBLISHED
Published
May 27, 2021
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS41.28%

2026-07-18 · v2026.06.15 · percentile 98.5%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

hackeroneoriginal assertion
container

A buffer overflow vulnerability exists in Pulse Connect Secure before 9.1R11.4 allows a remote authenticated attacker to execute arbitrary code as the root user via maliciously crafted meeting room.

CISA KEVoriginal assertion
observed_exploitation

Ivanti Pulse Connect Secure Collaboration Suite Buffer Overflow Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.412840000000; percentile 0.985160000000

Applicability

Cited product scope

Trace impact →
n/aPulse Connect Secure
[{"status": "affected", "version": "Fixed version 9.1R11.4"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r1.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r2.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r2.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r3.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r3.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r3.2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r3.3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r3.5:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r4:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r4.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r4.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r5.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.0:r6.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r10.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r10.2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r11.0:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r11.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r11.3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r4:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r5:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r6:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r7:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r8:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r8.4:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r9:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r9.1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:ivanti:connect_secure:9.1:r9.2:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.