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NVD / CVE Program· CNA mitre

CVE-2021-45557: Certain NETGEAR devices are affected by command injection by an authenticated user.

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 68.8% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects GC108P before 1.0.8.2, GC108PP before 1.0.8.2, GS108Tv3 before 7.0.7.2, GS110TPv3 before 7.0.7.2, GS110TPP before 7.0.7.2, GS110TUP before 1.0.5.3, GS710TUP before 1.0.5.3, GS308T before 1.0.3.2, GS310TP before 1.0.3.2, GS710TUP before 1.0.5.3, GS716TP before 1.0.4.2, GS716TPP before 1.0.4.2, GS724TPP before 2.0.6.3, GS724TPv2 before 2.0.6.3, GS724TPP before 2.0.6.3, GS728TPPv2 before 6.0.8.2, GS728TPv2 before 6.0.8.2, GS752TPv2 before 6.0.8.2, GS752TPP before 6.0.8.2, GS750E before 1.0.1.10, MS510TXM before 1.0.4.2, and MS510TXUP before 1.0.4.2.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Dec 25, 2021
Updated
Jun 17, 2026
EPSS
1.2% · 68th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CNA vs NVD score

NVD
8.8
CNA · mitre
7.5
1.3 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-45557

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
netgeargc108p firmware
netgeargc108p
netgeargc108pp firmware
netgeargc108pp
netgeargs108tv3 firmware
netgeargs108tv3
netgeargs110tpv3 firmware
netgeargs110tpv3
netgeargs110tpp firmware
netgeargs110tpp
netgeargs110tup firmware
netgeargs110tup

and 28 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • netgear gc108p firmwarebefore 1.0.8.2
  • netgear gc108pp firmwarebefore 1.0.8.2
  • netgear gs108tv3 firmwarebefore 7.0.7.2
  • netgear gs110tpp firmwarebefore 7.0.7.2
  • netgear gs110tpv3 firmwarebefore 7.0.7.2
  • netgear gs110tup firmwarebefore 1.0.5.3
  • netgear gs308t firmwarebefore 1.0.3.2
  • netgear gs310tp firmwarebefore 1.0.3.2
  • netgear gs710tup firmwarebefore 1.0.5.3
  • netgear gs716tp firmwarebefore 1.0.4.2
  • netgear gs716tpp firmwarebefore 1.0.4.2
  • netgear gs724tpp firmwarebefore 2.0.6.3
  • netgear gs724tpv2 firmwarebefore 2.0.6.3
  • netgear gs728tppv2 firmwarebefore 6.0.8.2
  • netgear gs728tpv2 firmwarebefore 6.0.8.2
  • netgear gs750e firmwarebefore 1.0.1.10
  • netgear gs752tpp firmwarebefore 6.0.8.2
  • netgear gs752tpv2 firmwarebefore 6.0.8.2
  • netgear ms510txm firmwarebefore 1.0.4.2
  • netgear ms510txup firmwarebefore 1.0.4.2

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-33514Certain NETGEAR devices are affected by command injection by an unauthenticated attacker via the vulnerable /sqfs/lib/libsal.so.0.0 library
    41Plan
  • CVE-2021-41314Certain NETGEAR smart switches are affected by a \n injection in the web UI's password field, which - due to several faulty aspects of the a
    39Monitor
  • CVE-2021-40866Certain NETGEAR smart switches are affected by a remote admin password change by an unauthenticated attacker via the (disabled by default) /
    36Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-40867Sep 13, 2021 · Certain NETGEAR smart switches are affected by an authentication hijacking race-condition vulnerability by an unauthenticated attacker who u
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2021-40867103 days apartCertain NETGEAR smart switches are affected by an authentication hijacking race-condition vulnerability by an unauthenticated attacker who u
    28Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records