Cyber Resilience

CVE-2026-1693

Arcinfo Pcvue 12.0.0 – 15.2.13

Published
26 February 2026
Modified
09 July 2026
Patch / advisory
View advisory
CVSS Score v4 5.3
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/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:Y/R:U/V:X/RE:M/U:Clear
EPSS Score 0.0031 24th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-1693 is a medium-severity Use of Obsolete Function (CWE-477) vulnerability in Arcinfo Pcvue. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Brute Force (T1110); ranked at the 24th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to IA-12 (Identity Proofing) and IA-2 (Identification and Authentication (Organizational Users)) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-1693 is a vulnerability in the PcVue application, affecting versions 12.0.0 through 16.3.3 inclusive. It stems from the continued use of the deprecated OAuth grant type Resource Owner Password Credentials (ROPC) flow in the web services supporting the WebVue, WebScheduler, TouchVue, and Snapvue features. This insecure authentication mechanism, associated with CWE-477 (Insecure Use of OAuth) and CWE-1390 (Weak Authentication), could enable a remote attacker to steal user credentials. The issue carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), indicating high confidentiality impact with no requirements for privileges or user interaction.

A remote attacker with network access to the affected PcVue instance can exploit this vulnerability without authentication. By leveraging the ROPC flow's transmission of usernames and passwords in requests to the web services, the attacker could intercept or extract credentials, potentially gaining unauthorized access to user accounts and associated resources within the PcVue environment.

The vendor has published a security bulletin at https://www.pcvue.com/security/#SB2026-2 addressing this issue, which security practitioners should consult for details on available patches or mitigation steps. The CVE was published on 2026-02-26.

OWASP Top 10 for Web (2025)

A03:2025 Software Supply Chain FailuresA07:2025 Authentication Failures

EU & UK References

Vulnerability Data

The OAuth grant type Resource Owner Password Credentials (ROPC) flow is still used by the werbservices used by the WebVue, WebScheduler, TouchVue and Snapvue features of PcVue in version 12.0.0 through 16.3.3 included despite being deprecated. It might allow a…

more

remote attacker to steal user credentials.

CWE(s)
CWE-477CWE-1390

Related Threats

MITRE ATT&CK Enterprise Techniques

T1110 Brute Force Credential Access
Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.
attack.mitre.org →
T1078 Valid Accounts Stealth
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1110.001 Password Guessing Credential Access
Adversaries with no prior knowledge of legitimate credentials within the system or environment may guess passwords to attempt access to accounts.
attack.mitre.org →
T1110.003 Password Spraying Credential Access
Adversaries may use a single or small list of commonly used passwords against many different accounts to attempt to acquire valid account credentials.
attack.mitre.org →
T1078.001 Default Accounts Stealth
Adversaries may obtain and abuse credentials of a default account as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1078.002 Domain Accounts Stealth
Adversaries may obtain and abuse credentials of a domain account as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-14868Same product: Arcinfo Pcvue
CVE-2026-1692Same product: Arcinfo Pcvue
CVE-2026-1695Same product: Arcinfo Pcvue
CVE-2026-1696Same product: Arcinfo Pcvue
CVE-2026-1694Same product: Arcinfo Pcvue
CVE-2026-1698Same product: Arcinfo Pcvue
CVE-2026-1697Same product: Arcinfo Pcvue
CVE-2025-32885Shared CWE-1390
CVE-2025-49201Shared CWE-1390
CVE-2025-1727Shared CWE-1390

Affected Assets

arcinfo
pcvue
12.0.0 — 15.2.13 · 16.0.0 — 16.3.4

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 9 hardening rules · 7 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V7.6.1
  • V6.3.6
  • V6.4.2
  • V6.4.4

Mitigating Controls (NIST 800-53 r5) AI

IA-12 Identity Proofing good match

Requires identity proofing at appropriate assurance levels before granting accounts, directly addressing insufficient proof of identity.

IA-2 Identification and Authentication (Organizational Users) good match

Requires unique identification and authentication of users, directly stopping weak mechanisms from being used.

IA-3 Device Identification and Authentication good match

Requires device identification and authentication before establishing connections.

IA-8 Identification and Authentication (Non-organizational Users) good match

Extends strong identification and authentication requirements to non-organizational users.

IA-5 Authenticator Management good match

Mandates proper authenticator issuance, management, and strength to ensure claimed identities are verified.

AC-3 Access Enforcement partial match

Enforces access decisions based on authenticated identities, making weak authentication less exploitable.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-03 full match
prevents

Explicitly requires authentication of users/services/hardware with MFA and password-strength controls.

PR.AA-02 mostly match
prevents

Identity proofing and binding is a core prerequisite for non-weak authentication.

PR.PS-02 mostly match
prevents

Software maintenance and replacement directly eliminates use of deprecated functions.

PR.PS-06 mostly match
prevents

Secure SDLC practices enforce review and removal of obsolete functions during development.

ID.AM-08 partial match
prevents

Lifecycle management of software includes replacing obsolete functions and code.

PR.AA-01 partial match
prevents

Credential management directly supports stronger authentication but does not guarantee proof of identity.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.5 Secure authentication full match
prevents

Mandating multi-factor and non-password authentication techniques counters the use of inherently weak single-factor or password-only authentication mechanisms.

A.5.17 Authentication information partial match
prevents

Strong-password and non-reuse requirements raise the bar against weak single-factor authentication that can be exploited via guessing or credential stuffing.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC processes include code reviews and maintenance that catch obsolete functions.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly prohibit use of deprecated/obsolete functions.

A.8.32 Change management partial match
prevents

Change management can trigger reviews that remove obsolete functions but does not directly address them.

A.8.8 Management of technical vulnerabilities none match
none

Vulnerability management may flag deprecated functions as known weaknesses during scans.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (1 rule)
  • V-248827 OL 8 must not have the rsh-server package installed. prevents CWE-1390
RHEL 7 (1 rule)
  • V-204442 The Red Hat Enterprise Linux operating system must not have the rsh-server package installed. prevents CWE-1390
RHEL 8 (1 rule)
  • V-230492 RHEL 8 must not have the rsh-server package installed. prevents CWE-1390
Ubuntu 22.04 (1 rule)
  • V-260470 Ubuntu 22.04 LTS, when booted, must require authentication upon booting into single-user and maintenance modes. prevents CWE-1390
Windows 10 (1 rule)
  • V-220865 The Windows Remote Management (WinRM) service must not use Basic authentication. prevents CWE-1390
Windows 11 (1 rule)
  • V-253418 The Windows Remote Management (WinRM) service must not use Basic authentication. prevents CWE-1390

References