How severe is CVE-2017-9977?

CVE-2017-9977 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-9977 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9977?

CVE-2017-9977 affects Avg Anti-virus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9977?

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-2017-9977 published?

CVE-2017-9977 was published on 2017-07-12 and last updated on 2026-06-17.

CVE-2017-9977

CVE-2017-9977 is a high-severity vulnerability in Avg Anti-virus with a CVSS 3.x base score of 7.5. 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 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Avg Anti-virus
Published: 2017-07-12
Last modified: 2026-06-17

Description

AVG AntiVirus for MacOS with scan engine before 4668 might allow remote attackers to bypass malware detection by leveraging failure to scan inside disk image (aka DMG) files.

Frequently asked questions

What is CVE-2017-9977?: AVG AntiVirus for MacOS with scan engine before 4668 might allow remote attackers to bypass malware detection by leveraging failure to scan inside disk image (aka DMG) files.
How severe is CVE-2017-9977?: CVE-2017-9977 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-9977 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9977?: CVE-2017-9977 affects Avg Anti-virus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9977?: 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-2017-9977 published?: CVE-2017-9977 was published on 2017-07-12 and last updated on 2026-06-17.

References

https://wwws.nightwatchcybersecurity.com/2017/07/06/avg-antivirus-for-macos-doesnt-scan-inside-disk-images-cve-2017-9977/

Affected products (1)

cpe:2.3:a:avg:anti-virus:-:*:*:*:*:*:*:*

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