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NVD / CVE Program· CNA mitre

CVE-2022-26987: TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MmtAtePras

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 1.5% (FIRST EPSS); higher than 74.5% of all records.
  • Someone with local access to the system 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

TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MmtAtePrase` function. Local users could get remote code execution.

HighCVSS 7.8 · v3.1—No exploit No fix recorded
Published
May 10, 2022
Updated
Jul 9, 2026
EPSS
1.5% · 74th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.5%

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-2022-26987

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
tp-linktl-wdr7660 firmware
tp-linktl-wdr7660
tp-linktl-wdr7661 firmware
tp-linktl-wdr7661
tp-linktl-wdr7620 firmware
tp-linktl-wdr7620
tp-linktl-wdr5660 firmware
tp-linktl-wdr5660
mercusysmercury d196g firmware
mercusysmercury d196g
fastcomfac1900r firmware
fastcomfac1900r

Affected versions

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

  • fastcom fac1900r firmware20190827_2.0.2
  • mercusys mercury d196g firmware20200109_2.0.4
  • tp-link tl-wdr5660 firmwareall versions
  • tp-link tl-wdr7620 firmwareall versions
  • tp-link tl-wdr7660 firmware2.0.30
  • tp-link tl-wdr7661 firmwareall versions

Same product

tp-link: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-46373TP-Link TL-WDR7660 2.0.30 has a stack overflow vulnerability via the function deviceInfoJsonToBincauses.
    39Monitor
  • CVE-2023-46371TP-Link device TL-WDR7660 2.0.30 and TL-WR886N 2.0.12 has a stack overflow vulnerability via the function upgradeInfoJsonToBin.
    39Monitor
  • CVE-2021-37774An issue was discovered in function httpProcDataSrv in TL-WDR7660 2.0.30 that allows attackers to execute arbitrary code.
    32Monitor

Published before and after this one in the same product

  • Later →CVE-2022-26988May 10, 2022 · TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MntAte` fu
    31Monitor
  • Later →CVE-2024-48710Oct 15, 2024 · In TP-Link TL-WDR7660 1.0, the wlanTimerRuleJsonToBin function handles the parameter string name without checking it, which can lead to stac
    26Monitor
  • Later →CVE-2024-48712Oct 15, 2024 · In TP-Link TL-WDR7660 1.0, the rtRuleJsonToBin function handles the parameter string name without checking it, which can lead to stack overf
    26Monitor

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.

No nightly-computed relations.

Chain candidates

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

—

Bug bounty scope

No known public program.

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

Technical details

Attack conditions

  • Someone with local access to the system 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
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

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