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No exploitation reportedFix available

CVE-2019-8274

No exploitation reported by the sources we read.

  • Published2019-03-08
  • Fixed in4.8
  • WeaknessCWE-122 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentially in result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.

Timeline

dates in UTC
  1. 2019-03-0823:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-8274?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-8274?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Siemens sinumerik access mymachine\/p2p
BranchAffectedFixed in
4.8< 4.84.8
Siemens sinumerik pcu base win10 software\/ipc
BranchAffectedFixed in
14.0< 14.0014.00
Siemens sinumerik pcu base win7 software\/ipc
BranchAffectedFixed in
12.1≤ 12.01no fix published

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-20-161-06 CISA3 known affected

    Siemens SINUMERIK

    Siemens SINUMERIK Access MyMachine /P2P: All versions < V4.8 · Siemens SINUMERIK PCU base Win10 software /IPC: All versions < V14.00 · Siemens SINUMERIK PCU base Win7 software /IPC: All versions < V12.01 HF4

Full record on NVD

Fix

  1. Update Siemens sinumerik access mymachine\/p2p to 4.8
  2. Vendor fix CISA ICSA-20-161-06 · 1 productUpdate to V4.8
  3. Vendor fix CISA ICSA-20-161-06 · 1 productUpdate to V14.00
  4. Vendor fix CISA ICSA-20-161-06 · 1 productUpdate to V12.01 HF4
  5. Mitigation from the vendor CISA ICSA-20-161-06 · 3 productsRestrict access to the device to the internal or VPN network and to trusted IP addresses only.

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • CNAweakness (CWE)CWE-122read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score8.3 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2019-03-08
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-8274?

UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentially in result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.

Is CVE-2019-8274 actively exploited?

Active exploitation of CVE-2019-8274 has not been confirmed. Its EPSS score was 8.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-8274?

CVE-2019-8274 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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