CVE-2019-15680

mediumpriority · track · 31EPSS 0.027 · 86 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.67% (86th) EPSS

CVSS 5 · medium

Is it mine?

45 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-25

TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedSIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants)siemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants)siemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900Fsiemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1500 V3.1siemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1500 V3.1 PROsiemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1900 V3.1siemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1900 V3.1 PROsiemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC2200 V3.1siemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC2200 V3.1 PROsiemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC WinCC Runtime Advancedsiemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC WinCC Runtime Professionalsiemens_psirt
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants)cisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants)cisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900Fcisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1500 V3.1cisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1500 V3.1 PROcisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1900 V3.1cisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC1900 V3.1 PROcisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC2200 V3.1cisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC ITC2200 V3.1 PROcisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC WinCC Runtime Advancedcisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory
FixedSIMATIC WinCC Runtime Professionalcisa_csaf_ot
This product is not affected by any vulnerability listed in this advisory

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimaryCWE-476USCWE-476USCWE-476US

affected products (45)

Products and version ranges known to be affected.

SIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants)all versionscisa_csaf_otUS
SIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants)all versionscisa_csaf_otUS
SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900Fall versionscisa_csaf_otUS
SIMATIC ITC1500 V3.1all versionscisa_csaf_otUS
SIMATIC ITC1500 V3.1 PROall versionscisa_csaf_otUS
SIMATIC ITC1900 V3.1all versionscisa_csaf_otUS
SIMATIC ITC1900 V3.1 PROall versionscisa_csaf_otUS
SIMATIC ITC2200 V3.1all versionscisa_csaf_otUS
SIMATIC ITC2200 V3.1 PROall versionscisa_csaf_otUS
SIMATIC WinCC Runtime Advancedall versionscisa_csaf_otUS
SIMATIC WinCC Runtime Professionalall versionscisa_csaf_otUS
Siemens SIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants)≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants)≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC ITC1500 V3.1≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC ITC1500 V3.1 PRO≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC ITC1900 V3.1≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC ITC1900 V3.1 PRO≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC ITC2200 V3.1≤ vers:all/*cisa_csaf_otUS
Siemens SIMATIC ITC2200 V3.1 PRO≤ vers:all/*cisa_csaf_otUS

showing 20 of 45

advisories (2)

Vendor and ecosystem advisories describing this.

SSA-478893SSA-478893: TightVNC Vulnerabilities in Industrial Products (Revoked)2020-12-08csaf · siemens_psirtDE
Multiple TightVNC (V1.x) vulnerabilities could allow remote code execution and Denial-of-Service attacks under certain conditions. Siemens has previously released this advisory containing a set of products that were considered to be affected. Through Siemens' continuous investigation processes it was identified that all products previously advised are not affected by any vulnerability listed in this advisory.
ICSA-20-343-08Siemens Products using TightVNC (Update A)2020-12-08icsa · cisa_csaf_otUS
Multiple TightVNC (V1.x) vulnerabilities could allow remote code execution and Denial-of-Service attacks under certain conditions. Siemens has previously released this advisory containing a set of products that were considered to be affected. Through Siemens' continuous investigation processes it was identified that all products previously advised are not affected by any vulnerability listed in this advisory.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot siemens_psirt NVD CVE.org MITRE

published 2019-10-29modified 2026-06-17

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references (23)

External citations — patches, advisories, analysis.

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