CVE-2020-20118
CVE-2020-20118 is a medium-severity vulnerability in Avast Antivirus 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-120.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (7th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Avast Antivirus
- Published:
- Last modified:
Description
Buffer Overflow vulnerability in Avast AntiVirus before v.19.7 allows a local attacker to cause a denial of service via a crafted request to the aswSnx.sys driver.
Frequently asked questions
- What is CVE-2020-20118?
- Buffer Overflow vulnerability in Avast AntiVirus before v.19.7 allows a local attacker to cause a denial of service via a crafted request to the aswSnx.sys driver.
- How severe is CVE-2020-20118?
- CVE-2020-20118 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-2020-20118 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-20118?
- CVE-2020-20118 affects Avast Antivirus. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-20118?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-20118 published?
- CVE-2020-20118 was published on 2023-07-11 and last updated on 2026-07-05.
References
Affected products (1)
- cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*
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