CVE-2020-14977
CVE-2020-14977 is a high-severity vulnerability in F-secure Safe with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 9.3
- EPSS exploit prediction: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: F-secure Safe
- Published:
- Last modified:
Description
An issue was discovered in F-Secure SAFE 17.7 on macOS. The XPC services use the PID to identify the connecting client, which allows an attacker to perform a PID reuse attack and connect to a privileged XPC service, and execute privileged commands on the system. NOTE: the attacker needs to execute code on an already compromised machine.
Frequently asked questions
- What is CVE-2020-14977?
- An issue was discovered in F-Secure SAFE 17.7 on macOS. The XPC services use the PID to identify the connecting client, which allows an attacker to perform a PID reuse attack and connect to a privileged XPC service, and execute privileged commands on the system. NOTE: the attacker needs to execute code on an already compromised machine.
- How severe is CVE-2020-14977?
- CVE-2020-14977 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-14977 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-14977?
- CVE-2020-14977 affects F-secure Safe. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-14977?
- 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-2020-14977 published?
- CVE-2020-14977 was published on 2020-06-23 and last updated on 2026-06-17.
References
- https://theevilbit.github.io/posts/
- https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame
- https://www.f-secure.com/en/home/products/safe
Affected products (1)
- cpe:2.3:a:f-secure:safe:17.7:*:*:*:*:macos:*:*
More vulnerabilities in F-secure Safe
- CVE-2020-14978 — High (CVSS 8.1): An issue was discovered in F-Secure SAFE 17.7 on macOS. Due to incorrect client version verification, an attacker can…
- CVE-2019-11644 — High (CVSS 7.8): In the F-Secure installer in F-Secure SAFE for Windows before 17.6, F-Secure Internet Security before 17.6, F-Secure…
- CVE-2022-38164 — Medium (CVSS 6.5): A vulnerability affecting F-Secure SAFE browser for Android and iOS was discovered. A maliciously crafted website could…
- CVE-2021-44749 — Medium (CVSS 5.5): A vulnerability affecting F-Secure SAFE browser protection was discovered improper URL handling can be triggered to…
- CVE-2021-44748 — Medium (CVSS 5.5): A vulnerability affecting F-Secure SAFE browser was discovered whereby browsers loads images automatically this…
- CVE-2022-47524 — Medium (CVSS 5.4): F-Secure SAFE Browser 19.1 before 19.2 for Android allows an IDN homograph attack.