CVE Explorer
CVE-2026-8479
IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable
for a NULL pointer dereferencing, if a specially crafted
sequence of messages is sent for a certain time, causing
Denial of Service impact.
Product is only affected if IEC 60870-5-104 functionality in
bidirectional mode (BCI) is configured.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"RTU500 series CMU firmware","vendor":"Hitachi Energy","versions":[{"lessThanOrEqual":"12.7.7","status":"affected","version":"12.7.1","versionType":"custom"},{"lessThanOrEqual":"13.5.4","status":"affected","version":"13.5.1","versionType":"custom"},{"lessThanOrEqual":"13.6.3","status":"affected","version":"13.6.1","versionType":"custom"},{"lessThanOrEqual":"13.7.8","status":"affected","version":"13.7.1","versionType":"custom"},{"status":"affected","version":"13.8.1","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:e1d435739974a38e9c2c1c43e2d9d4ca44871abe212e34a175cbe0725c84ee8e · sha256:40f18a5dcb49c4a0… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact"…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:e1d435739974a38e9c2c1c43e2d9d4ca44871abe212e34a175cbe0725c84ee8e · sha256:40f18a5dcb49c4a0… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-476","description":"CWE-476 NULL pointer dereference","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:e1d435739974a38e9c2c1c43e2d9d4ca44871abe212e34a175cbe0725c84ee8e · sha256:40f18a5dcb49c4a0… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://publisher.hitachienergy.com/preview?DocumentID=8DBD000252&LanguageCode=en&DocumentPartId=&Action=Launch"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e1d435739974a38e9c2c1c43e2d9d4ca44871abe212e34a175cbe0725c84ee8e · sha256:40f18a5dcb49c4a0… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.