CVE-2023-22843

mediumpriority · track · 19EPSS 0.003 · 26 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.33% (26th) EPSS
CVSS 4.8 · medium
Is it mine?
13 products
Check your exposure
Who says so?
7 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

An authenticated attacker with administrative access to the web management interface can inject malicious JavaScript code inside the definition of a Threat Intelligence rule, that will be stored and can later be executed by another legitimate user viewing the details of such a rule. Via stored Cross-Site Scripting (XSS), an attacker may be able to perform unauthorized actions on behalf of legitimate users and/or gather sensitive information. JavaScript injection was possible in the contents for Yara rules, while limited HTML injection has been proven for packet and STYX rules.

01

remediations

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

A vendor fix is available.

  • FixedCMCnozomi_psirt

    Upgrade to v22.6.2 or later.

  • FixedGuardiannozomi_psirt

    Upgrade to v22.6.2 or later.

  • FixedRUGGEDCOM APE1808siemens_psirt

    Upgrade Nozomi Guardian / CMC to V23.4.1. Contact customer support to receive patch and update information.

  • FixedRUGGEDCOM APE1808cisa_csaf_ot

    Upgrade Nozomi Guardian / CMC to V23.4.1. Contact customer support to receive patch and update information.

  • MitigationCMCnozomi_psirt

    Use internal firewall features to limit access to the web management interface.

  • MitigationGuardiannozomi_psirt

    Use internal firewall features to limit access to the web management interface.

  • WorkaroundRUGGEDCOM APE1808siemens_psirt

    Adopt best practices that include closing the browser after a logout

  • WorkaroundRUGGEDCOM APE1808cisa_csaf_ot

    Adopt best practices that include closing the browser after a logout

02

cvss

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

7.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.2–7.3

v3.14.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 1.7 · impact 2.7
v3.16.4mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L/E:P/RL:O/RC:Csecondary · CISA US
v3.16.4mediumAV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Lsecondary · FSTEC (BDU) RU
v3.16.4mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Lsecondary · Nozomi Networks PSIRT
v3.16.4mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:Lsecondary · prodsec@nozominetworks.comexploitability 0.9 · impact 5.5
v3.16.4mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v4.07.3highCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.07.3highCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · prodsec@nozominetworks.com
v4.04.2mediumCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-79USCWE-79USCWE-79US
05

affected products (13)

Products and version ranges known to be affected.

06

advisories (3)

Vendor and ecosystem advisories describing this.

  • NN-2023:4-01Stored Cross-Site Scripting (XSS) in Threat Intelligence rules in Guardian/CMC before 22.6.22023-08-09csaf · nozomi_psirtUS
  • SSA-647455SSA-647455: Multiple Vulnerabilities in Nozomi Guardian/CMC before 22.6.2 on RUGGEDCOM APE1808 devices2023-10-10csaf · siemens_psirtDE

    Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC before V22.6.2. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Siemens is preparing updates and recommends specific countermeasures for products where updates are not, or not yet available. Customers are advised to consult and implement the workarounds provided in Nozomi Network's upstream security notifications.

  • ICSA-23-285-07Siemens RUGGEDCOM APE1802023-10-10icsa · cisa_csaf_otUS

    Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC before V22.6.2. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Siemens is preparing updates and recommends specific countermeasures for products where updates are not, or not yet available. Customers are advised to consult and implement the workarounds provided in Nozomi Network's upstream security notifications.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otnozomi_psirtnvdsiemens_psirtNVDCVE.orgMITRE
published 2023-08-09modified 2026-06-17
10

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan