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CVE-2018-3658

21
FAUCET Score

CVE-2018-3658 describes multiple memory leaks in Intel AMT within Intel CSME firmware versions prior to 12.0.5, affecting Intel and Siemens products. An unauthenticated attacker with network access to a provisioned Intel AMT system could exploit this vulnerability to cause a partial denial of service. With a CVSS score of 5.3 (Medium), the attack requires no user interaction and has low complexity, but its impact is limited to availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.01.06CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:*:*:*:*:*:*:*:*
< 21.01.09CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_ipc427e_firmware:*:*:*:*:*:*:*:*
< 21.01.09CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_ipc477e_firmware:*:*:*:*:*:*:*:*
< r1.30.0CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_ipc547e_firmware:*:*:*:*:*:*:*:*
< r1.23.0CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_pc547g_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.30%
Probability of exploitation in next 30 days
EPSS Percentile
87.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0330 is in the 83rd percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-377318.pdf
PatchThird Party Advisory
ics-cert.us-cert.gov / advisories/ICSA-19-043-05
Third Party AdvisoryUS Government Resource
security.netapp.com / advisory/ntap-20180924-0003
Third Party Advisory
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
intel.com / content/www/us/en/security-center/advisory/intel-sa-00141.html
Vendor Advisory
securityfocus.com / bid/106996
Third Party AdvisoryVDB Entry