CVE-2018-6767 [High] | Out-of-bounds Read in Wavpack

CVE-2018-6767 is rated High Exploit Risk (72.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.88%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

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Link

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#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-21	0.65%	0.88%	+0.23%
2	2025-11-18	0.88%	0.65%	-0.23%
3	2025-03-30	—	0.88%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-21

0.65%

0.88%

+0.23%

2025-11-18

0.88%

0.65%

-0.23%

2025-03-30

—

0.88%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.0	HIGH	`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]
6.8	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.6	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.0

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

6.8

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

6.4

[email protected]

OS Trackers for CVE-2018-6767

vendor	priority	summary	link
`alpine`	high	CVE-2018-6767: 1 source package rows (wavpack); 18 state rows across 9 repos (3.10-main, 3.11-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 16, open 2.	https://security.alpinelinux.org/vuln/CVE-2018-6767
`debian`	not yet assigned	CVE-2018-6767 not yet assigned priority: Debian including 1 source packages (wavpack), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2018-6767
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2018-6767
`ubuntu`	medium	CVE-2018-6767 medium priority: Ubuntu including 1 source packages (wavpack), 4 status rows across 4 suites (artful, trusty, upstream, xenial): DNE 1, needs-triage 1, not-affected 1, released 1.	https://ubuntu.com/security/CVE-2018-6767

Affected software / configurations for CVE-2018-6767

Vendor	Product	Version	Raw CPE
wavpack	wavpack	5.1.0	cpe:2.3:a:wavpack:wavpack:5.1.0:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*
canonical	ubuntu_linux	14.04	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
canonical	ubuntu_linux	16.04	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
canonical	ubuntu_linux	17.10	cpe:2.3:o:canonical:ubuntu_linux:17.10:::::::*

References for CVE-2018-6767

URL	Tags
http://packetstormsecurity.com/files/155743/Slackware-Security-Advisory-wavpack-Updates.html
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889276	Exploit Issue Tracking Third Party Advisory
https://github.com/dbry/WavPack/commit/d5bf76b5a88d044a1be1d5656698e3ba737167e5	Patch
https://github.com/dbry/WavPack/issues/27	Issue Tracking Third Party Advisory
https://seclists.org/bugtraq/2019/Dec/37
https://usn.ubuntu.com/3568-1/	Third Party Advisory
https://www.debian.org/security/2018/dsa-4125	Third Party Advisory

URL

CVE-2018-6767

Public exploit references (Exploit-DB) for CVE-2018-6767

Exploit prediction scoring system (EPSS) score for CVE-2018-6767

Common vulnerability scoring system (CVSS) metrics for CVE-2018-6767

Weakness enumeration for CVE-2018-6767

OS Trackers for CVE-2018-6767

Affected software / configurations for CVE-2018-6767

References for CVE-2018-6767