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PatchSiren cyber security CVE debrief

CVE-2026-26457 ipflavors CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-27T17:17:48.267Z and has not been modified since then. The ccoap library contains a null pointer dereference vulnerability in the coap_dump_msg() function when processing COAP messages with options of zero length. This vulnerability has been assigned a CVSS score of 7.5 and is considered HIGH severity. Organizations using the ccoap library should verify their inventory, assess potential impact, and monitor for patches or updates from the vendor. The CVE Program and NVD provide official records and details. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability.

Vendor
ipflavors
Product
ccoap
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-27
Original CVE updated
2026-09-01
Advisory published
2026-08-27
Advisory updated
2026-09-01

Who should care

Organizations using the ccoap library in their systems or applications should be aware of this vulnerability and take necessary actions to mitigate the risk. This includes verifying inventory, assessing potential impact, and monitoring for patches or updates from the vendor. Security teams and vulnerability management teams should prioritize this vulnerability due to its high severity and potential impact on system stability and security.

Technical summary

The ccoap library contains a null pointer dereference vulnerability in the coap_dump_msg() function. This occurs when processing COAP messages with options of zero length. The vulnerability has been assigned a CVSS score of 7.5 and is considered HIGH severity. Affected systems may experience crashes or potentially allow attackers to execute arbitrary code.

Defensive priority

Organizations using the ccoap library should verify their inventory and assess the potential impact of this vulnerability.

Recommended defensive actions

  • Verify inventory of systems and applications using the ccoap library
  • Assess potential impact of the vulnerability on organizational systems
  • Monitor for patches or updates from the vendor
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE-2026-26457 record indicates a null pointer dereference vulnerability in the coap_dump_msg() function of the ccoap library. The vulnerability occurs when processing COAP messages with options of zero length. Official records from the CVE Program and NVD provide details. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected systems, assess potential impact, and monitor for patches or updates from the vendor.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-26457 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-26457

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

  • CVE-2026-26457 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-26457

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

Supplemental references

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.