CVE-2013-3861
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."
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 82.4%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
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 2.0
- 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 82.44% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- microsoft/.net framework
- Source
- secure@microsoft.com
EPSS 82.4% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.us-cert.gov/ncas/alerts/TA13-288AUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-082
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18842
- http://www.us-cert.gov/ncas/alerts/TA13-288AUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-082
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18842
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.