CVE-2002-0155

highpriority · track · 38EPSS 0.241 · 98 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

24.1% (98th) EPSS

CVSS 7.5 · high

Is it mine?

6 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

Buffer overflow in Microsoft MSN Chat ActiveX Control, as used in MSN Messenger 4.5 and 4.6, and Exchange Instant Messenger 4.5 and 4.6, allows remote attackers to execute arbitrary code via a long ResDLL parameter in the MSNChat OCX.

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 · 6.4–7.5

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

v2.06.4mediumAV:N/AC:L/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USLLM-inferred

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft msn chat controlall versionsnvdUScpe:2.3:a:microsoft:msn_chat_control:*:*:*:*:*:*:*:*
microsoft msn messenger= 4.5nvdUScpe:2.3:a:microsoft:msn_messenger:*:*:*:*:*:*:*:*
microsoft msn messenger= 4.6nvdUScpe:2.3:a:microsoft:msn_messenger:*:*:*:*:*:*:*:*
microsoft msn messenger service for exchange= 4.5nvdUScpe:2.3:a:microsoft:msn_messenger_service_for_exchange:*:*:*:*:*:*:*:*
microsoft msn messenger service for exchange= 4.6nvdUScpe:2.3:a:microsoft:msn_messenger_service_for_exchange:*:*:*:*:*:*:*:*

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 2002-05-29modified 2026-06-16

references (10)

External citations — patches, advisories, analysis.

scry

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