How severe is CVE-2026-75135?

CVE-2026-75135 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-75135 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-75135?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-75135 published?

CVE-2026-75135 was published on 2026-09-02 and last updated on 2026-09-08.

CVE-2026-75135

CVE-2026-75135 is a medium-severity vulnerability with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-316.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 6.9
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-316
Published: 2026-09-02
Last modified: 2026-09-08

Description

UpSignOn for Windows before 7.19.0 contains a sensitive data exposure vulnerability that allows local attackers to recover the master password and decrypt vault contents by reading a retained backup key from the process memory of UpSignOn.exe, even after the vault has been re-locked. Attackers can extract the backup key from process memory to decrypt the encrypted master password backup stored in v6-vault1.DATA.txt, then use the recovered master password to decrypt the main vault and export all password manager entries in cleartext.

Frequently asked questions

What is CVE-2026-75135?: UpSignOn for Windows before 7.19.0 contains a sensitive data exposure vulnerability that allows local attackers to recover the master password and decrypt vault contents by reading a retained backup key from the process memory of UpSignOn.exe, even after the vault has been re-locked. Attackers can extract the backup key from process memory to decrypt the encrypted master password backup stored in v6-vault1.DATA.txt, then use the recovered master password to decrypt the main vault and export all password manager entries in cleartext.
How severe is CVE-2026-75135?: CVE-2026-75135 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-75135 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-75135?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-75135 published?: CVE-2026-75135 was published on 2026-09-02 and last updated on 2026-09-08.

References

Other CWE-316 vulnerabilities

CVE-2025-52579 — Critical (CVSS 9.4): Emerson ValveLink Products store sensitive information in cleartext in memory. The sensitive memory might be saved to…
CVE-2014-2366 — Critical (CVSS 9.0): upAdminPg.asp in Advantech WebAccess before 7.2 allows remote authenticated users to discover credentials by reading…
CVE-2024-36792 — High (CVSS 8.2): An issue in the implementation of the WPS in Netgear WNR614 JNR1010V2/N300-V1.1.0.54_1.0.1 allows attackers to gain…
CVE-2025-50109 — High (CVSS 7.7): Emerson ValveLink Products store sensitive information in cleartext within a resource that might be accessible to…
CVE-2025-9970 — High (CVSS 7.4): Cleartext Storage of Sensitive Information in Memory vulnerability in ABB MConfig.This issue affects MConfig: through…
CVE-2023-40724 — High (CVSS 7.3): A vulnerability has been identified in QMS Automotive (All versions < V12.39). User credentials are found in memory as…

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