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NVD / CVE Program· CNA mitre

CVE-2009-1831: The Nullsoft Modern Skins Support module (gen_ff.dll) in Nullsoft Winamp before 5.552 allows remote attackers to execute arbitrary code via

Noroxi assessment

Priority: Plan (action score 48/100)

  • A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 36.3% (FIRST EPSS); higher than 98.4% of all records.
  • According to the record, no fixed version is available yet.

Add it to your regular patch cycle. 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

The Nullsoft Modern Skins Support module (gen_ff.dll) in Nullsoft Winamp before 5.552 allows remote attackers to execute arbitrary code via a crafted MAKI file, which triggers an incorrect sign extension, an integer overflow, and a stack-based buffer overflow.

CriticalCVSS 9.3 · v2.0—Weaponized No fix recorded
Published
May 29, 2009
Updated
Jun 16, 2026
EPSS
36.3% · 98th percentile

Report tools

JSON

Action score

48

Plan

Add it to your regular patch cycle.

CVSS
37 / 40 · 9.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
11 / 30 · 36.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Weaponized exploit exists
  • No fixed version yet

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

Follow CVE-2009-1831

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
nullsoftwinamp

Affected versions

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

  • nullsoft winampup to 5.55 inclusive
  • nullsoft winamp2.0
  • nullsoft winamp2.10
  • nullsoft winamp2.24
  • nullsoft winamp2.4
  • nullsoft winamp2.50
  • nullsoft winamp2.5e
  • nullsoft winamp2.60
  • nullsoft winamp2.61
  • nullsoft winamp2.62
  • nullsoft winamp2.64
  • nullsoft winamp2.65
  • nullsoft winamp2.6x
  • nullsoft winamp2.70
  • nullsoft winamp2.71
  • nullsoft winamp2.72
  • nullsoft winamp2.73
  • nullsoft winamp2.74
  • nullsoft winamp2.75
  • nullsoft winamp2.76

Same product

nullsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2006-0476Buffer overflow in Nullsoft Winamp 5.12 allows remote attackers to execute arbitrary code via a playlist (pls) file with a long file name (F
    52Plan
  • CVE-2009-0263Multiple buffer overflows in Winamp 5.541 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary cod
    45Plan
  • CVE-2004-1119Stack-based buffer overflow in IN_CDDA.dll in Winamp 5.05, and possibly other versions including 5.06, allows remote attackers to execute ar
    45Plan

Published before and after this one in the same product

  • ← EarlierCVE-2008-3567Aug 10, 2008 · Cross-zone scripting vulnerability in the NowPlaying functionality in NullSoft Winamp before 5.541 allows remote attackers to conduct cross-
    18Monitor
  • ← EarlierCVE-2009-0186Mar 4, 2009 · Integer overflow in libsndfile 1.0.18, as used in Winamp and other products, allows context-dependent attackers to execute arbitrary code vi
    38Monitor
  • Later →CVE-2009-3995Dec 18, 2009 · Multiple heap-based buffer overflows in IN_MOD.DLL (aka the Module Decoder Plug-in) in Winamp before 5.57, and libmikmod 3.1.12, might allow
    39Monitor

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

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×5

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Metasploit moduleexploit/windows/fileformat/winamp_maki_bofWinamp MAKI Buffer Overflowexploit2009-05-20
Exploit-DB entrydos2009-05-22
Exploit-DB entrylocal2012-09-12
Exploit-DB entrylocal2009-05-22
Exploit-DB entrylocal2009-05-22
Exploit-DB entrylocal2009-05-26

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.

  1. Metasploit-10 d
  2. First PoC-8 d
  3. Published
  4. TodayNov 5, 2026+6369 d

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

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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)

    CWE-189 · Numeric Errors

    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 (6 more)

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

    All records