How severe is CVE-2018-1000849?

CVE-2018-1000849 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1000849 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000849?

CVE-2018-1000849 affects Alpinelinux Alpine Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000849?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-1000849 published?

CVE-2018-1000849 was published on 2018-12-20 and last updated on 2026-06-17.

CVE-2018-1000849

CVE-2018-1000849 is a high-severity vulnerability in Alpinelinux Alpine Linux with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Alpinelinux Alpine Linux
Published: 2018-12-20
Last modified: 2026-06-17

Description

Alpine Linux version Versions prior to 2.6.10, 2.7.6, and 2.10.1 contains a Other/Unknown vulnerability in apk-tools (Alpine Linux' package manager) that can result in Remote Code Execution. This attack appear to be exploitable via A specially crafted APK-file can cause apk to write arbitrary data to an attacker-specified file, due to bugs in handling long link target name and the way a regular file is extracted.. This vulnerability appears to have been fixed in 2.6.10, 2.7.6, and 2.10.1.

Frequently asked questions

What is CVE-2018-1000849?: Alpine Linux version Versions prior to 2.6.10, 2.7.6, and 2.10.1 contains a Other/Unknown vulnerability in apk-tools (Alpine Linux' package manager) that can result in Remote Code Execution. This attack appear to be exploitable via A specially crafted APK-file can cause apk to write arbitrary data to an attacker-specified file, due to bugs in handling long link target name and the way a regular file is extracted.. This vulnerability appears to have been fixed in 2.6.10, 2.7.6, and 2.10.1.
How severe is CVE-2018-1000849?: CVE-2018-1000849 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1000849 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000849?: CVE-2018-1000849 affects Alpinelinux Alpine Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000849?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-1000849 published?: CVE-2018-1000849 was published on 2018-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:alpinelinux:alpine_linux:*:*:*:*:*:*:*:*

More vulnerabilities in Alpinelinux Alpine Linux

CVE-2017-9671 — 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…
CVE-2017-9669 — 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…

All CVEs affecting Alpinelinux Alpine Linux →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →