No exploitation reportedFix available

CVE-2022-34819

Q: Is CVE-2022-34819 actively exploited?

Active exploitation of CVE-2022-34819 has not been confirmed. Its EPSS score was 2.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-34819?

CVE-2022-34819 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-07-12
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

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CP 1243-7 LTE EU (All versions < V3.3.46), SIMATIC CP 1243-7 LTE US (All versions < V3.3.46), SIMATIC CP 1243-8 IRC (All versions < V3.3.46), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0 < V2.2.28), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS NET CP 1242-7 V2 (All versions < V3.3.46), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions < V3.3.46), SIPLUS S7-1200 CP 1243-1 RAIL (All versions < V3.3.46). The application lacks proper validation of user-supplied data when parsing specific messages. This could result in a heap-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of device.

Timeline

dates in UTC

2022-07-1210:15CVE 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-2022-34819?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-34819?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens simatic cp 1242-7 v2 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Siemens simatic cp 1243-1 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Siemens simatic cp 1243-7 lte eu firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

12 more products 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-22-195-12 CISA15 known affected
Siemens SRCS VPN Feature in SIMATIC CP Devices
SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) · SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0) · SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0) · +12 more

Full record on NVD

Fix

Vendor fix CISA ICSA-22-195-12 · 5 productsUpdate to V2.2.28 or later version
Vendor fix CISA ICSA-22-195-12 · 8 productsUpdate to V3.3.46 or later version
Vendor fix CISA ICSA-22-195-12 · 2 productsUpdate to V3.0.22 or later version
Workaround from the vendor CISA ICSA-22-195-12 · 15 productsBlock access to port 5243/udp e.g. with an external firewall if possible
Workaround from the vendor CISA ICSA-22-195-12 · 15 productsDisable the SINEMA Remote Connect Server (SRCS) VPN feature
Mitigation from the vendor CISA ICSA-22-195-12 · 15 productsMake sure to configure the CP to only connect to trusted SINEMA Remote Connect Server instances

Advisories and patches

cert-portal.siemens.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-04-18
OpenCVESSVC decisionnone—
CNACVSS 3.110read 2026-10-23
NVDCVSS 3.110read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
CNAweakness (CWE)CWE-122read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score2.1 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published: 2022-07-12
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-34819?

Is CVE-2022-34819 actively exploited?

Active exploitation of CVE-2022-34819 has not been confirmed. Its EPSS score was 2.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-34819?

CVE-2022-34819 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Running SIMATIC CP? Hear about its next vulnerability

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 ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database