CVE-2019-8269 json
UltraVNC revision 1206 has stack-based Buffer overflow vulnerability in VNC client code inside FileTransfer module, which leads to a denial…
published 2019-03-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-17667
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.7%
- EPSS 5.7% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known
Summary
UltraVNC revision 1206 has stack-based Buffer overflow vulnerability in VNC client code inside FileTransfer module, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1207.
Patch / fix
- uvnc ultravnc 1.2.2.3
- siemens sinumerik_access_mymachine/p2p 4.8
- siemens sinumerik_pcu_base_win10_software/ipc 14.00
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-20-161-06 updated cvss 7.5
Siemens SINUMERIK
-
Siemens SINUMERIK Access MyMachine /P2P <V4.8affected: fixed in V4.8, mitigation
-
Siemens SINUMERIK PCU base Win7 software /IPC <V12.01_HF4affected: fixed in V12.01, mitigation
-
Siemens SINUMERIK PCU base Win10 software /IPC <V14.00affected: fixed in V14.00, mitigation
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
Exploit prediction
5.72% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Kaspersky Lab UltraVNC
Classification
References
-
ics-cert.kaspersky.com
/advisories/klcert-advisories/2019/03/01/klcert-19-016-ultravnc-stack-based-buffer-overflow/
third-party-advisory
-
cert-portal.siemens.com
/productcert/pdf/ssa-927095.pdf
third-party-advisory
-
us-cert.gov
/ics/advisories/icsa-20-161-06
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2019-8269
- NVD CVE-2019-8269
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.