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NVD / CVE Program· CNA mitre

CVE-2020-35738: WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in pack_utils.c because of an integer overflow in a malloc argument.

MediumCVSS 6.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 24/100)

  • 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: 1.2% (FIRST EPSS); higher than 68.8% of all records.
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: wavpack (Alpine:v3.12) 5.4.0-r0; wavpack (Debian:12) 5.3.0-2; wavpack (Debian:9) 5.0.0-2+deb9u3.

Low priority for now. Upgrade to wavpack (Alpine:v3.12) 5.4.0-r0; wavpack (Debian:12) 5.3.0-2; wavpack (Debian:9) 5.0.0-2+deb9u3 or later.

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

WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in pack_utils.c because of an integer overflow in a malloc argument. NOTE: some third-parties claim that there are later "unofficial" releases through 5.3.2, which are also affected.

Published
Dec 28, 2020
Updated
Jun 16, 2026
EPSS
1.2% · 68th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • 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
wavpackwavpack
debiandebian linux
fedoraprojectfedora

Affected versions

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

  • debian debian linux9.0
  • fedoraproject fedora32
  • fedoraproject fedora33
  • wavpack wavpack5.3.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.12wavpackbefore 5.4.0-r05.4.0-r0
Debian:12wavpackbefore 5.3.0-25.3.0-2
Debian:9wavpackbefore 5.0.0-2+deb9u35.0.0-2+deb9u3
openSUSE:Leap 15.1wavpackbefore 5.4.0-lp151.5.6.15.4.0-lp151.5.6.1
openSUSE:Leap 15.2wavpackbefore 5.4.0-lp152.7.3.15.4.0-lp152.7.3.1
openSUSE:Tumbleweedwavpackbefore 5.4.0-1.65.4.0-1.6
SUSE:HPE Helion OpenStack 8wavpackbefore 4.60.99-5.9.14.60.99-5.9.1
SUSE:Linux Enterprise Module for Basesystem 15 SP2wavpackbefore 5.4.0-4.9.15.4.0-4.9.1
SUSE:Linux Enterprise Point of Sale 11 SP3wavpackbefore 4.50.1-1.33.14.50.1-1.33.1

Same product

wavpack: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-7254The ParseCaffHeaderConfig function of the cli/caff.c file of WavPack 5.1.0 allows a remote attacker to cause a denial-of-service (global…
    34Monitor
  • CVE-2018-10537An issue was discovered in WavPack 5.1.0 and earlier.
    32Monitor
  • CVE-2018-10536An issue was discovered in WavPack 5.1.0 and earlier.
    32Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-1010317Jul 11, 2019 · WavPack 5.1.0 and earlier is affected by: CWE-457: Use of Uninitialized Variable.
    22Monitor
  • ← EarlierCVE-2019-1010319Jul 11, 2019 · WavPack 5.1.0 and earlier is affected by: CWE-457: Use of Uninitialized Variable.
    22Monitor
  • Later →CVE-2021-44269Mar 10, 2022 · An out of bounds read was found in Wavpack 5.4.0 in processing *.WAV files.
    22Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
alpine:wavpack5.4.0-r0 · Alpine:v3.12Package registry (OSV)
debian:wavpack5.3.0-2 · Debian:12Package registry (OSV)
opensuse:wavpack5.4.0-lp152.7.3.1 · openSUSE:Leap 15.2Package registry (OSV)
suse:wavpack5.4.0-4.9.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2Package registry (OSV)

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

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.

ATT&CK techniques

—

References

Show all references (4 more)

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

All records