What is the CVSS score of CVE-2023-34998?

CVE-2023-34998 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.2%.

Oas Platform CVE-2023-34998

HIGH

Cleartext Transmission of Sensitive Information (CWE-319)

2023-09-05 talos-cna@cisco.com

Authentication Bypass Oas Platform Openautomationsoftware

8.1

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-319 OWASP Top 10:2025 A04:2025 - Cryptographic Failures ASVS 5.0 V12 - Secure Communication Transport encryption
Impact	CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 1.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

An authentication bypass vulnerability exists in the OAS Engine functionality of Open Automation Software OAS Platform v18.00.0072. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-319. An authentication bypass vulnerability exists in the OAS Engine functionality of Open Automation Software OAS Platform v18.00.0072. A specially crafted series of network requests can lead to arbitrary authentication. An attacker can sniff network traffic to trigger this vulnerability. Affected products include: Openautomationsoftware Oas Platform.

Know when Oas Platform gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 8.1 HIGH

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

An authentication bypass vulnerability exists in the OAS Engine functionality of Open Automation Software OAS Platform v18.00.0072. A specially crafted series of network requests can lead to arbitrary authentication. An attacker can sniff network traffic to trigger this vulnerability.

Threat Intelligence Overview

EPSS Score

1.2%

Top 37% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 1.2%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +40

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:openautomationsoftware:oas_platform:18.00.0072:*:*:*:*:*:*:*

More in Oas Platform

View all

CVE-2023-31242 CRITICAL Act Now POC

9.8 Sep 05

An authentication bypass vulnerability exists in the OAS Engine functionality of Open Automation Software OAS Platform v

CVE-2022-26082 CRITICAL Act Now POC

9.8 May 25

A file write vulnerability exists in the OAS Engine SecureTransferFiles functionality of Open Automation Software OAS Pl

CVE-2022-26833 CRITICAL Act Now POC

9.4 May 25

An improper authentication vulnerability exists in the REST API functionality of Open Automation Software OAS Platform V

CVE-2023-34353 HIGH This Week POC

7.5 Sep 05

An authentication bypass vulnerability exists in the OAS Engine authentication functionality of Open Automation Software

CVE-2022-27169 HIGH This Week POC

7.5 May 25

An information disclosure vulnerability exists in the OAS Engine SecureBrowseFile functionality of Open Automation Softw

CVE-2022-26303 HIGH This Week POC

7.5 May 25

An external config control vulnerability exists in the OAS Engine SecureAddUser functionality of Open Automation Softwar

CVE-2022-26077 HIGH This Week POC

7.5 May 25

A cleartext transmission of sensitive information vulnerability exists in the OAS Engine configuration communications fu

CVE-2022-26067 HIGH This Week POC

7.5 May 25

An information disclosure vulnerability exists in the OAS Engine SecureTransferFiles functionality of Open Automation So

CVE-2022-26043 HIGH This Week POC

7.5 May 25

An external config control vulnerability exists in the OAS Engine SecureAddSecurity functionality of Open Automation Sof

CVE-2022-26026 HIGH This Week POC

7.5 May 25

A denial of service vulnerability exists in the OAS Engine SecureConfigValues functionality of Open Automation Software

CVE-2023-34317 MEDIUM This Month POC

6.5 Sep 05

An improper input validation vulnerability exists in the OAS Engine User Creation functionality of Open Automation Softw

CVE-2023-32271 MEDIUM This Month POC

6.5 Sep 05

An information disclosure vulnerability exists in the OAS Engine configuration management functionality of Open Automati

Same weakness CWE-319 – Cleartext Transmission of Sensitive Information

View all

CVE-2022-43551 HIGH POC

7.5

CVE-2025-26199 CRITICAL POC

9.8

CVE-2025-32880 CRITICAL POC

9.8

CVE-2023-33730 CRITICAL POC

9.8

CVE-2019-15911 CRITICAL POC

9.8

CVE-2019-18852 CRITICAL POC

9.8

CVE-2023-23914 CRITICAL POC

9.1

CVE-2024-25735 CRITICAL POC

9.1

Same technique Authentication Bypass

View all

CVE-2015-3306 CRITICAL POC

10.0

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

REF https://talosintelligence.com/vulnerability_reports/TALOS-2023-1770 REF https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1770

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back