CVE-2015-0987: omron cj2h_plc
CVSS: 10.0v3.1CriticalModified
Published 03-10-2015Last modified 02-06-2026
Vulnerability summary
CVE-2015-0987 is a critical (CVSS 10.0) vulnerability in omron cj2h_plc. EPSS estimates a 1.17% chance of exploitation in the next 30 days, higher than 67.1% of scored vulnerabilities.
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)EPSS score
1.17%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 03-10-2015PublishedVulnerability first disclosed.
- 02-06-2026Last modifiedVulnerability information updated.
Description
Omron CX-One CX-Programmer before 9.6, CJ2M PLC devices before 2.1, and CJ2H PLC devices before 1.5 rely on cleartext password transmission, which allows remote attackers to obtain sensitive information by sniffing the network during a PLC unlock request.
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 10.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:HSourcesAll 2 agree
- NVDNIST10.0CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.17%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
0.00 pp
From 1.17% on 21-09-2026
21-09-202621-10-2026
EPSS score1.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-200Exposure of Sensitive Information to an Unauthorized ActorThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
- CWE-319Cleartext Transmission of Sensitive InformationThe product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
Affected systems
Omron3 products
- cj2h_plc≤ 1.4
- cj2m_plc≤ 2.0
- cx-programmer≤ 9.5
1 vendor · 3 products
References
1 links- ics-cert.us-cert.gov/advisories/ICSA-15-274-01X Refsource MISCThird Party AdvisoryUS Government Resource