CVE-2010-4254

highpriority · attend · 45EPSS 0.136 · 96 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

13.6% (96th) EPSS

CVSS 7.5 · high

Is it mine?

8 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

Mono, when Moonlight before 2.3.0.1 or 2.99.x before 2.99.0.10 is used, does not properly validate arguments to generic methods, which allows remote attackers to bypass generic constraints, and possibly execute arbitrary code, via a crafted method call.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.5

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v2.06.8mediumAV:N/AC:L/Au:N/C:P/I:P/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-15974Mono/Moonlight Generic Type Argument - Privilege Escalationfunctional · exploit_db

affected products (8)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
mono monoall versionsnvdUScpe:2.3:a:mono:mono:*:*:*:*:*:*:*:*
novell moonlight≤ 2.3.0nvdUScpe:2.3:a:novell:moonlight:*:*:*:*:*:*:*:*
novell moonlight= 2.99.0nvdUScpe:2.3:a:novell:moonlight:*:*:*:*:*:*:*:*
novell moonlight= 2.99.1nvdUScpe:2.3:a:novell:moonlight:*:*:*:*:*:*:*:*
novell moonlight= 2.99.2nvdUScpe:2.3:a:novell:moonlight:*:*:*:*:*:*:*:*
novell moonlight= 2.99.7nvdUScpe:2.3:a:novell:moonlight:*:*:*:*:*:*:*:*
novell moonlight= 2.99.9nvdUScpe:2.3:a:novell:moonlight:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2010-12-06modified 2026-06-16

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+25193 more

references (26)

External citations — patches, advisories, analysis.

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