CVE-2021-20699
Sharp NEC Displays (UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300...
Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.
- Record
CVE-2021-20699- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-77, CWE-120
- Updated
- 2026-11-02
CVE List No score
Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.
- Record
CVE-2021-20699- Updated
- 2026-11-02
EUVDEUVD-2021-8114 No score
Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.
- Record
EUVD-2021-8114- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2rfj-vp7f-g45f
Sharp NEC Displays (UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300...
Sharp NEC Displays (UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UN552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V964Q R2.000 and prior to it, C961Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.
- Record
GHSA-2rfj-vp7f-g45f- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
Affected products
- sharp display solutions, ltd. c431
- sharp display solutions, ltd. c501
- sharp display solutions, ltd. c551
- sharp display solutions, ltd. c651q
- sharp display solutions, ltd. c751q
- sharp display solutions, ltd. c861q
- sharp display solutions, ltd. c981q
- sharp display solutions, ltd. p404
- sharp display solutions, ltd. p484
- sharp display solutions, ltd. p554
- sharp display solutions, ltd. p654q
- sharp display solutions, ltd. p754q
Show 56 moreShow less
- sharp display solutions, ltd. un462a
- sharp display solutions, ltd. un462va
- sharp display solutions, ltd. un492s
- sharp display solutions, ltd. un492vs
- sharp display solutions, ltd. un552
- sharp display solutions, ltd. un552a
- sharp display solutions, ltd. un552s
- sharp display solutions, ltd. un552v
- sharp display solutions, ltd. un552vs
- sharp display solutions, ltd. ux552
- sharp display solutions, ltd. ux552s
- sharp display solutions, ltd. v404
- sharp display solutions, ltd. v404-t
- sharp display solutions, ltd. v484
- sharp display solutions, ltd. v484-t
- sharp display solutions, ltd. v554
- sharp display solutions, ltd. v554-t
- sharp display solutions, ltd. v554q
- sharp display solutions, ltd. v654q
- sharp display solutions, ltd. v754q
- sharp display solutions, ltd. v864q
- sharp display solutions, ltd. v984q
- sharp-nec-displays c431 firmware
- sharp-nec-displays c501 firmware
- sharp-nec-displays c551 firmware
- sharp-nec-displays c651q firmware
- sharp-nec-displays c751q firmware
- sharp-nec-displays c861q firmware
- sharp-nec-displays c981q firmware
- sharp-nec-displays p404 firmware
- sharp-nec-displays p484 firmware
- sharp-nec-displays p554 firmware
- sharp-nec-displays p654q firmware
- sharp-nec-displays p754q firmware
- sharp-nec-displays un462a firmware
- sharp-nec-displays un462va firmware
- sharp-nec-displays un492s firmware
- sharp-nec-displays un492vs firmware
- sharp-nec-displays un552 firmware
- sharp-nec-displays un552a firmware
- sharp-nec-displays un552s firmware
- sharp-nec-displays un552v firmware
- sharp-nec-displays un552vs firmware
- sharp-nec-displays ux552 firmware
- sharp-nec-displays ux552s firmware
- sharp-nec-displays v404-t firmware
- sharp-nec-displays v404 firmware
- sharp-nec-displays v484-t firmware
- sharp-nec-displays v484 firmware
- sharp-nec-displays v554-t firmware
- sharp-nec-displays v554 firmware
- sharp-nec-displays v554q firmware
- sharp-nec-displays v654q firmware
- sharp-nec-displays v754q firmware
- sharp-nec-displays v864q firmware
- sharp-nec-displays v984q firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20699 is a critical vulnerability (CVSS 9.8) in Sharp Display Solutions, Ltd. C431, published June 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.66%, the 76th percentile. No source names a fixed version.