CVE-2017-6026
This may allow a current session to be compromised.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 31.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
A Use of Insufficiently Random Values issue was discovered in Schneider Electric Modicon PLCs Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The session numbers generated by the web application are lacking randomization and are shared between several users. This may allow a current session to be compromised.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 31.82% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 30 November 2018
- CISA KEV
- Not listed
- Weakness
- CWE-330
- Affected
- schneider-electric/modicon m251 firmware · schneider-electric/modicon m241 firmware
- Source
- ics-cert@hq.dhs.gov
EPSS 31.8% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/97254Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory, US Government Resource
- https://www.exploit-db.com/exploits/45918/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/97254Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory, US Government Resource
- https://www.exploit-db.com/exploits/45918/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.