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No exploitation reportedFix available

CVE-2019-8267

No exploitation reported by the sources we read.

  • Published2019-03-08
  • Fixed in1.2.2.3
  • WeaknessCWE-125

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 1207 has out-of-bounds read vulnerability in VNC client code inside TextChat module, which results in a denial of service (DoS) condition. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1208.

Timeline

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

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2019-8267?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-8267?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Uvnc ultravnc
BranchAffectedFixed in
1.2< 1.2.2.31.2.2.3

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 Uvnc ultravnc to 1.2.2.3
  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 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-125read 2026-10-23
  • NVDweakness (CWE)CWE-125read 2026-10-23
  • FIRST EPSSEPSS score1.9 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-03-08
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-8267?

UltraVNC revision 1207 has out-of-bounds read vulnerability in VNC client code inside TextChat module, which results in a denial of service (DoS) condition. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1208.

Is CVE-2019-8267 actively exploited?

Active exploitation of CVE-2019-8267 has not been confirmed. Its EPSS score was 1.9% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-8267?

CVE-2019-8267 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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