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PatchSiren cyber security CVE debrief

CVE-2024-2466 curl CVE debrief

libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to use mbedTLS. libcurl would wrongly avoid using the set hostname function when the specified hostname was given as an IP address, therefore completely skipping the certificate check. This affects all uses of TLS protocols (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc).

Vendor
curl
Product
SINEC NMS
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2024-03-27
Original CVE updated
2026-10-15
Advisory published
2024-03-27
Advisory updated
2026-10-15

Who should care

Defenders responsible for systems using libcurl with mbedTLS should assess exposure and prioritize verification and remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review TLS configurations and update to V3.0 SP1 or later version. Affected systems may pose significant security risks if not properly addressed.

Why it matters

CVE-2024-2466 is a high-severity vulnerability in libcurl that affects TLS certificate checks when built with mbedTLS. Defenders should prioritize verification and remediation to prevent potential security risks.

  • Verify TLS configurations for certificate checks
  • Update to V3.0 SP1 or later version
  • Assess exposure of systems using libcurl with mbedTLS

Technical summary

libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to use mbedTLS. This affects all uses of TLS protocols (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc). The vulnerability impacts systems using libcurl with mbedTLS, allowing for potential security risks if not properly mitigated. Defenders should prioritize verifying affected systems and updating to V3.0 SP1 or later version to prevent exploitation. The CVE Program and NVD detail page provide additional context on the vulnerability.

Defensive priority

Defenders should prioritize verifying affected systems, reviewing TLS configurations, and updating to V3.0 SP1 or later version.

Recommended defensive actions

  • Verify if systems using libcurl with mbedTLS are affected
  • Review TLS configurations for certificate checks
  • Update to V3.0 SP1 or later version
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on exploitation or impact. Defenders should verify affected systems, review TLS configurations, and update to V3.0 SP1 or later version. Evidence from the CVE Program and NVD detail page supports this assessment. Additional verification tasks are recommended to ensure thorough exposure assessment.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-2466 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-2466

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

  • CVE-2024-2466 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-2466

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

Supplemental references

  • CVE-2024-2466

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-319-04.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-331112.json

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-331112.html

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-04

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Supplemental source

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.