CVE-2017-9669: A heap overflow in apk (Alpine Linux's package manager) allows a remote attacker to cause a denial of service,

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HIGH 7.8WATCHLISTMITIGATE

CVE-2017-9669 is a high-severity flaw (CVSS 7.8) affecting alpine linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A heap overflow in apk (Alpine Linux's package manager) allows a remote attacker to cause a denial of service, or achieve code execution by crafting a malicious APKINDEX.tar.gz file.

Why this priority

High severity
Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-07-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: alpinelinux

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-07-17 21:29 UTCPublished CVE record published
2026-06-17 01:28 UTCUpdated Record last modified

alpinelinux alpine linux MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-9669?

alpine linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-9669 being exploited?

CVE-2017-9669 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-9669 affect?

CVE-2017-9669 affects alpine linux. Severity is high (CVSS 7.8). A heap overflow in apk (Alpine Linux's package manager) allows a remote attacker to cause a denial of service, or achieve code execution by crafting a malicious APKINDEX.tar.gz file.

How urgent is CVE-2017-9669?

Priority 59/100. High severity; Public exploit reference; On your watchlist

Related CVEs

CVE-2018-1000849 HIGH 8.8 UPGRADE Alpine Linux version Versions prior to 2.6.10, 2.7.6, and 2.10.1 contains a Other/Unknown vulnerability in apk
CVE-2017-9671 HIGH 7.8 MITIGATE A heap overflow in apk (Alpine Linux's package manager) allows a remote attacker to cause a denial of service,

References

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