How severe is CVE-2020-5637?

CVE-2020-5637 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-5637 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5637?

CVE-2020-5637 affects Necplatforms Aterm Sa3500g Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5637?

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

When was CVE-2020-5637 published?

CVE-2020-5637 was published on 2020-12-14 and last updated on 2026-06-17.

CVE-2020-5637

CVE-2020-5637 is a medium-severity vulnerability in Necplatforms Aterm Sa3500g Firmware with a CVSS 3.x base score of 6.8. 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-354.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 5.2
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-354
Affected product: Necplatforms Aterm Sa3500g Firmware
Published: 2020-12-14
Last modified: 2026-06-17

Description

Improper validation of integrity check value vulnerability in Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker with an administrative privilege to execute a malicious program.

Frequently asked questions

What is CVE-2020-5637?: Improper validation of integrity check value vulnerability in Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker with an administrative privilege to execute a malicious program.
How severe is CVE-2020-5637?: CVE-2020-5637 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-5637 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5637?: CVE-2020-5637 affects Necplatforms Aterm Sa3500g Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5637?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5637 published?: CVE-2020-5637 was published on 2020-12-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:necplatforms:aterm_sa3500g_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Necplatforms Aterm Sa3500g Firmware

CVE-2020-5635 — High (CVSS 8.8): Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker on the adjacent network to send a specially…
CVE-2020-5636 — Medium (CVSS 6.8): Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker with an administrative privilege to send a…

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