CVE-2013-3861

highpriority · attend · 60EPSS 0.824 · 100 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

82.4% (100th) EPSS

CVSS 7.8 · high

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5 SP1, 3.5.1, 4, and 4.5 allows remote attackers to cause a denial of service (application crash or hang) via crafted character sequences in JSON data, aka "JSON Parsing Vulnerability."

cvss

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

7.8

010

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

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft .net framework= 2.0nvdUScpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
microsoft .net framework= 3.5nvdUScpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
microsoft .net framework= 3.5.1nvdUScpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
microsoft .net framework= 4.0nvdUScpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
microsoft .net framework= 4.5nvdUScpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*

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 2013-10-09modified 2026-06-16

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+25171 more

references (8)

External citations — patches, advisories, analysis.

scry

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