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CVE-2019-8275

25
FAUCET Score

CVE-2019-8275 describes multiple critical improper null termination vulnerabilities in UltraVNC revision 1211 and related Siemens SINUMERIK products. These flaws allow remote, unauthenticated attackers to access out-of-bounds data, potentially leading to full compromise of confidentiality, integrity, and availability. While the vulnerability has a CVSS score of 9.8 (Critical) and a high FAUCET Risk Score of 84/100, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion. Organizations using affected versions should upgrade to UltraVNC revision 1212 or later to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.2.3CPE matchmatch criteria
cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
< 4.8CPE matchmatch criteria
cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p:*:*:*:*:*:*:*:*
< 14.00CPE matchmatch criteria
cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc:*:*:*:*:*:*:*:*
<= 12.01CPE matchmatch criteria
cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.97%
Probability of exploitation in next 30 days
EPSS Percentile
89.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0397 is in the 82nd percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-286838.pdf
cert-portal.siemens.com / productcert/pdf/ssa-927095.pdf
Third Party Advisory
cert-portal.siemens.com / productcert/pdf/ssa-940818.pdf
ics-cert.kaspersky.com / advisories/klcert-advisories/2019/03/01/klcert-19-022-ultravnc-improper-null-termination
Third Party Advisory
us-cert.cisa.gov / ics/advisories/icsa-21-131-11
us-cert.gov / ics/advisories/icsa-20-161-06
Third Party AdvisoryUS Government Resource