Siemens SIMATIC HMI Comfort Outdoor Panels up to 16 Update 3 exceptional condition

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Siemens SIMATIC HMI Comfort Outdoor Panels, SIMATIC HMI Comfort Panels, SIMATIC HMI KTP Mobile Panels and SIMATIC Wincc Runtime Advanced up to 16 Update 3. This issue affects some unknown processing. Performing a manipulation results in exceptional condition. This vulnerability is identified as CVE-2021-25662. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Siemens SIMATIC HMI Comfort Outdoor Panels, SIMATIC HMI Comfort Panels, SIMATIC HMI KTP Mobile Panels and SIMATIC Wincc Runtime Advanced up to 16 Update 3 (SCADA Software). This affects some unknown functionality. The manipulation with an unknown input leads to a exceptional condition vulnerability. CWE is classifying the issue as CWE-755. The product does not handle or incorrectly handles an exceptional condition. This is going to have an impact on availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC client fails to handle an exception properly if the program execution process is modified after sending a packet from the server, which could result in a Denial-of-Service condition.

The weakness was released 05/12/2021 as ssa-538778. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2021-25662. Neither technical details nor an exploit are publicly available.

Applying the patch 16 Update 4 is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Exceptional condition
CWE: CWE-755
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 16 Update 4

Timelineinfo

01/21/2021 🔍
05/12/2021 +110 days 🔍
05/12/2021 +0 days 🔍
06/03/2026 +1848 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-538778
Status: Confirmed

CVE: CVE-2021-25662 (🔍)
GCVE (CVE): GCVE-0-2021-25662
GCVE (VulDB): GCVE-100-174981

Entryinfo

Created: 05/12/2021 22:35
Updated: 06/03/2026 03:26
Changes: 05/12/2021 22:35 (39), 05/15/2021 16:07 (5), 06/03/2026 03:26 (43)
Complete: 🔍
Cache ID: 216::103

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