CVE-2013-3656

mediumpriority · track · 24EPSS 0.020 · 80 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.97% (80th) EPSS

CVSS 5.8 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

Cybozu Office 9.1.0 and earlier does not properly manage sessions, which allows remote attackers to bypass authentication by leveraging knowledge of a login URL.

cvss

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

5.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9

v2.04.9mediumAV:N/AC:M/Au:N/C:P/I:P/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimary

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
cybozu cybozu office≤ 9.1.0nvdUScpe:2.3:a:cybozu:cybozu_office:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2013-07-20modified 2026-06-16

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+7725 more

references (11)

External citations — patches, advisories, analysis.

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