CVE-2022-26987

Exp

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.

Published: 2022-05-10 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-26987 is rated High Exploit Risk (64.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.54%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-26987

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-26987

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-05-17 5.50% 0.54% -4.97%
2 2025-05-12 5.88% 5.50% -0.38%
3 2025-05-11 — 5.88% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-26987

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2022-26987

Affected software / configurations for CVE-2022-26987

Vendor Product Version Raw CPE
tp-link tl-wdr7660_firmware 2.0.30 cpe:2.3:o:tp-link:tl-wdr7660_firmware:2.0.30:*:*:*:*:*:*:*
tp-link tl-wdr7661_firmware — cpe:2.3:o:tp-link:tl-wdr7661_firmware:-:*:*:*:*:*:*:*
tp-link tl-wdr7620_firmware — cpe:2.3:o:tp-link:tl-wdr7620_firmware:-:*:*:*:*:*:*:*
tp-link tl-wdr5660_firmware — cpe:2.3:o:tp-link:tl-wdr5660_firmware:-:*:*:*:*:*:*:*
mercusys mercury_d196g_firmware 20200109_2.0.4 cpe:2.3:o:mercusys:mercury_d196g_firmware:20200109_2.0.4:*:*:*:*:*:*:*
fastcom fac1900r_firmware 20190827_2.0.2 cpe:2.3:o:fastcom:fac1900r_firmware:20190827_2.0.2:*:*:*:*:*:*:*

References for CVE-2022-26987

cvelogic Threat Intelligence