How severe is CVE-2017-11747?

CVE-2017-11747 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-11747 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11747?

CVE-2017-11747 affects Tinyproxy Project Tinyproxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11747?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-11747 published?

CVE-2017-11747 was published on 2017-07-30 and last updated on 2026-06-17.

CVE-2017-11747

CVE-2017-11747 is a medium-severity vulnerability in Tinyproxy Project Tinyproxy with a CVSS 3.x base score of 5.5. 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-269.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Tinyproxy Project Tinyproxy
Published: 2017-07-30
Last modified: 2026-06-17

Description

main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.

Frequently asked questions

What is CVE-2017-11747?: main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.
How severe is CVE-2017-11747?: CVE-2017-11747 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-11747 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11747?: CVE-2017-11747 affects Tinyproxy Project Tinyproxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11747?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11747 published?: CVE-2017-11747 was published on 2017-07-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:*

More vulnerabilities in Tinyproxy Project Tinyproxy

CVE-2023-49606 — Critical (CVSS 9.8): A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0.…
CVE-2026-31842 — High (CVSS 7.5): Tinyproxy through 1.11.3 is vulnerable to HTTP request parsing desynchronization due to a case-sensitive comparison of…
CVE-2022-40468 — High (CVSS 7.5): Potential leak of left-over heap data if custom error page templates containing special non-standard variables are…
CVE-2025-63938 — Medium (CVSS 6.5): Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within…

All CVEs affecting Tinyproxy Project Tinyproxy →

Other CWE-269 (Improper Privilege Management) vulnerabilities

CVE-2026-31852 — Critical (CVSS 10.0): Jellyfin is an open-source media system. The code-quality.yml GitHub Actions workflow in jellyfin/jellyfin-ios is…
CVE-2025-20282 — Critical (CVSS 10.0): A vulnerability in an internal API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to…
CVE-2025-0505 — Critical (CVSS 10.0): On Arista CloudVision systems (virtual or physical on-premise deployments), Zero Touch Provisioning can be used to gain…
CVE-2023-48418 — Critical (CVSS 10.0): In checkDebuggingDisallowed of DeviceVersionFragment.java, there is a possible way to access adb before SUW…
CVE-2023-48419 — Critical (CVSS 10.0): An attacker in the wifi vicinity of a target Google Home can spy on the victim, resulting in Elevation of Privilege
CVE-2023-31273 — Critical (CVSS 10.0): Protection mechanism failure in some Intel DCM software before version 5.2 may allow an unauthenticated user to…

Browse all CWE-269 (Improper Privilege Management) vulnerabilities →