VulnerabilityModified

CVE-2018-11462

CRITICAL 9.8EPSS 3.69%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability has been identified in SINUMERIK 808D V4.7 (All versions), SINUMERIK 808D V4.8 (All versions), SINUMERIK 828D V4.7 (All versions < V4.7 SP6 HF1), SINUMERIK 840D sl V4.7 (All versions < V4.7 SP6 HF5), SINUMERIK 840D sl V4.8 (All versions < V4.8 SP3). By sending a specially crafted authentication request to the affected systems a remote attacker could escalate his privileges to an elevated user account but not to root. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no privileges and no user interaction. The vulnerability could allow an attacker to compromise confidentiality, integrity and availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

CVSS 3.0: 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 3.69% probability · 89th percentile
CISA KEV: Not listed
Weakness: CWE-264
Affected: siemens/sinumerik 808d v4.7 firmware · siemens/sinumerik 808d v4.8 firmware · siemens/sinumerik 828d v4.7 firmware · siemens/sinumerik 840d sl v4.7 firmware · siemens/sinumerik 840d sl v4.8 firmware
Source: productcert@siemens.com

References

http://www.securityfocus.com/bid/106185Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-170881.pdfVendor Advisory
http://www.securityfocus.com/bid/106185Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-170881.pdfVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.