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NVD / CVE Program· CNA mitre

CVE-2006-6603: Buffer overflow in the YMMAPI.YMailAttach ActiveX control (ymmapi.dll) before 2005.1.1.4 in Yahoo! Messenger allows remote attackers to exec

Noroxi assessment

Priority: Monitor (action score 39/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 6.6% (FIRST EPSS); higher than 93.8% of all records.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Buffer overflow in the YMMAPI.YMailAttach ActiveX control (ymmapi.dll) before 2005.1.1.4 in Yahoo! Messenger allows remote attackers to execute arbitrary code via a crafted HTML document. NOTE: some details were obtained from third party information.

CriticalCVSS 9.3 · v2.0—No exploit No fix recorded
Published
Dec 15, 2006
Updated
Jun 16, 2026
EPSS
6.6% · 93th percentile
CWE
—

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
37 / 40 · 9.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 6.6%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2006-6603

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
yahoomessenger

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • yahoo messengerup to 8.0 inclusive
  • yahoo messenger5.0
  • yahoo messenger5.5
  • yahoo messenger5.6
  • yahoo messenger6.0
  • yahoo messenger7.0
  • yahoo messenger7.5

Same product

yahoo: all records

Other highest-scoring records for the same primary product.

  • CVE-2007-3147Buffer overflow in the Yahoo! Webcam Upload ActiveX control in ywcupl.dll 2.0.1.4 for Yahoo! Messenger 8.1.0.249 allows remote attackers to
    49Plan
  • CVE-2007-4515Buffer overflow in a certain ActiveX control in YVerInfo.dll before 2007.8.27.1 in the Yahoo! services suite for Yahoo! Messenger before 8.1
    47Plan
  • CVE-2007-3148Buffer overflow in the Yahoo! Webcam Viewer ActiveX control in ywcvwr.dll 2.0.1.4 for Yahoo! Messenger 8.1.0.249 allows remote attackers to
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2006-4975Sep 24, 2006 · Yahoo! Messenger for WAP permits saving messages that contain JavaScript, which allows user-assisted remote attackers to inject arbitrary we
    10Monitor
  • ← EarlierCVE-2006-5563Oct 27, 2006 · Unspecified vulnerability in Yahoo! Messenger (Service 18) before 8.1.0.195 allows remote attackers to cause a denial of service (NULL deref
    21Monitor
  • Later →CVE-2007-0768Feb 5, 2007 · Multiple cross-site scripting (XSS) vulnerabilities in the Contact Details functionality in Yahoo! Messenger 8.1.0.209 and earlier allow use
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

    If successful

    Confidentiality
    C · data can be read
    Integrity
    C · data or configuration can be modified
    Availability
    C · the service can be disrupted
    Attack complexity
    M
    Confidentiality impact
    C
    Integrity impact
    C
    Availability impact
    C

    Weakness class (CWE)

    —

    CVSS vector

    AV:N/AC:M/Au:N/C:C/I:C/A:C

    nvd-primary

    Attack context

    MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

    MITRE has no CAPEC/ATT&CK mapping for this CWE.

    Change log

    No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

    References

    Show all references (5 more)

    Vendor advisories and official records. Exploit/PoC links are deliberately left out.

    All records