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No exploitation reportedFix available

CVE-2020-26868

No exploitation reported by the sources we read.

  • Published2020-10-12
  • Fixed in12.0.17
  • WeaknessCWE-668 · CWE-767

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

ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a denial-of-service attack due to the ability of an unauthorized user to modify information used to validate messages sent by legitimate web clients. This issue also affects third-party systems based on the Web Services Toolkit.

Timeline

dates in UTC
  1. 2020-10-1214:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2020-26868?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-26868?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Arcinfo pcvue
BranchAffectedFixed in
12.0≥ 8.10, < 12.0.1712.0.17

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-20-308-03 CISA1 known affected

    ARC Informatique PcVue (Update A)

    PcVue: Versions 8.10 to versions prior to 12.0.17

Full record on NVD

Fix

  1. Update Arcinfo pcvue to 12.0.17
  2. Vendor fix CISA ICSA-20-308-03 · 1 productARC Informatique recommends upgrading PcVue to v12.0.17. Contact PcVue Support to receive instructions on downloading and installing the latest software version.
  3. Mitigation from the vendor CISA ICSA-20-308-03 · 1 productPatches are available for Version 12 (12.0.17 Maintenance Release) and Version 11.2 (11.2.06097 Update).
  4. Mitigation from the vendor CISA ICSA-20-308-03 · 1 productUninstall the web and mobile backend. Users not using the affected components should uninstall them. If the components are not required, do not install them.
  5. Mitigation from the vendor CISA ICSA-20-308-03 · 1 productHarden firewall configuration by ensuring that incoming connections on the corresponding port are authorized only if initiated by the IIS Web Server process. The listening port is configurable (default 8090) and may have been changed on the system using the Application Explorer.
  6. Mitigation from the vendor CISA ICSA-20-308-03 · 1 productFor more information on this issue, please see Security Bulletin 2020-1 on the ARC Informatique security page.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CNACVSS 3.17.5read 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-767read 2026-10-23
  • NVDweakness (CWE)CWE-668read 2026-10-23
  • FIRST EPSSEPSS score2.2 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-10-12
Last Modified
2026-07-09
NVD status
Modified

Frequently asked questions

What is CVE-2020-26868?

ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a denial-of-service attack due to the ability of an unauthorized user to modify information used to validate messages sent by legitimate web clients. This issue also affects third-party systems based on the Web Services Toolkit.

Is CVE-2020-26868 actively exploited?

Active exploitation of CVE-2020-26868 has not been confirmed. Its EPSS score was 2.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-26868?

CVE-2020-26868 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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