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CVE-2020-5637

22
FAUCET Score

CVE-2020-5637 is an improper integrity check vulnerability affecting Aterm SA3500G firmware versions prior to 3.5.9. An attacker with administrative privileges on the local network can exploit this to execute arbitrary malicious programs. Rated Medium severity (CVSS 6.8), it requires high privileges and network access for exploitation, but could lead to high impact on confidentiality, integrity, and availability. There is no public exploit code, active exploitation, or significant community discussion reported for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5.9CPE matchmatch criteria
cpe:2.3:o:necplatforms:aterm_sa3500g_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 21st percentile among its peer group of 399 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN55917325/index.html
Third Party Advisory
jvn.jp / jp/JVN55917325/index.html
Third Party Advisory
necplatforms.co.jp / product/security_ap/info_20201211.html
Vendor Advisory