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PatchSiren cyber security CVE debrief

CVE-2018-0147 Cisco CVE debrief

CVE-2018-0147 is identified in the supplied official records as a Java deserialization vulnerability affecting Cisco Secure Access Control System (ACS). CISA has added it to the Known Exploited Vulnerabilities catalog, which means it is treated as a known exploitation risk rather than a purely theoretical issue. The KEV entry directs organizations to apply updates per vendor instructions, so any active Cisco ACS deployment should be reviewed promptly for remediation status.

Vendor
Cisco
Product
Secure Access Control System (ACS)
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-25
Original CVE updated
2022-03-25
Advisory published
2022-03-25
Advisory updated
2022-03-25

Who should care

Security, IT, and identity/access management teams responsible for Cisco Secure Access Control System (ACS), especially in environments where the system is still deployed or reachable from trusted internal networks.

Technical summary

The supplied official sources describe CVE-2018-0147 as a Java deserialization vulnerability in Cisco Secure Access Control System (ACS). CISA's KEV catalog marks the issue as known exploited and instructs organizations to apply updates per vendor instructions. The provided corpus does not include a Cisco advisory, affected-version list, or further exploit details, so this debrief is limited to the official metadata and remediation guidance supplied.

Defensive priority

High. CISA added this CVE to the KEV catalog on 2022-03-25 and set a remediation due date of 2022-04-15, indicating urgent attention for any exposed Cisco ACS deployment.

Recommended defensive actions

  • Inventory all Cisco Secure Access Control System (ACS) instances and confirm whether they are still in use.
  • Apply vendor updates or mitigations as directed by Cisco and CISA KEV guidance.
  • If ACS is no longer required, decommission it or isolate it from production and administrative access.
  • Restrict network exposure to management interfaces and review any unnecessary inbound access paths.
  • Verify remediation after patching or mitigation and document the affected assets in your vulnerability management records.

Evidence notes

Evidence is limited to the official CVE record, NVD detail page, and CISA KEV metadata supplied in the corpus. The KEV record identifies Cisco Secure Access Control System (ACS), classifies the issue as a Java deserialization vulnerability, marks it as known exploited, and instructs organizations to apply updates per vendor instructions. No additional vendor advisory text, exploit mechanics, or affected-version data were provided.

Sources and references

Verified primary and authoritative sources

  • CVE-2018-0147 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2018-0147

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

  • CVE-2018-0147 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2018-0147

    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.