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PatchSiren cyber security CVE debrief

CVE-2020-8243 Ivanti CVE debrief

CVE-2020-8243 is a code execution vulnerability affecting Ivanti Pulse Connect Secure. CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03, which means it is treated as a vulnerability with known exploitation risk and should be prioritized for remediation. CISA’s guidance for this entry is to apply vendor updates per Ivanti instructions, with the KEV due date aligned to ED 21-03 requirements.

Vendor
Ivanti
Product
Pulse Connect Secure
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Administrators and security teams responsible for Ivanti Pulse Connect Secure deployments should treat this as a high-priority remediation item, especially any environment exposed to external users or supporting remote access.

Technical summary

The available source corpus identifies CVE-2020-8243 as an Ivanti Pulse Connect Secure code execution vulnerability. CISA lists it in the Known Exploited Vulnerabilities catalog and references ED 21-03 for further guidance. The corpus does not provide deeper technical details such as affected versions, exploit method, or attack preconditions, so defensive handling should rely on vendor remediation guidance and asset inventory confirmation.

Defensive priority

High. This is a CISA KEV-listed vulnerability, so remediation should be prioritized ahead of non-exploited issues. Follow the vendor’s update guidance and the CISA directive referenced by the KEV entry.

Recommended defensive actions

  • Identify all Ivanti Pulse Connect Secure instances in your environment.
  • Apply vendor updates per Ivanti instructions as directed by CISA.
  • Verify remediation against CISA ED 21-03 guidance for Pulse Connect Secure product vulnerabilities.
  • Confirm the affected systems are no longer listed as unpatched in your vulnerability management and asset inventory records.
  • Monitor CISA KEV and vendor advisories for any follow-on guidance related to this product.

Evidence notes

Source corpus includes the CISA Known Exploited Vulnerabilities catalog entry for CVE-2020-8243, which names the issue as an Ivanti Pulse Connect Secure code execution vulnerability, adds it on 2021-11-03, and states the required action is to apply updates per vendor instructions. The entry also references CISA ED 21-03 and aligns the due date to 2022-05-03. No additional technical exploit details were supplied in the corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-8243 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-8243

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2020-8243 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-8243

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.