CASCACascade Atlas

Evidence dossier

CVE-2020-5735

CVE-2020-5735

71.9–88.9Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Amcrest cameras and NVR are vulnerable to a stack-based buffer overflow over port 37777. An authenticated remote attacker can abuse this issue to crash the device and possibly execute arbitrary code.

State
PUBLISHED
Published
Apr 8, 2020
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS35.64%

2026-07-18 · v2026.06.15 · percentile 98.3%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

tenableoriginal assertion
container

Amcrest cameras and NVR are vulnerable to a stack-based buffer overflow over port 37777. An authenticated remote attacker can abuse this issue to crash the device and possibly execute arbitrary code.

CISA KEVoriginal assertion
observed_exploitation

Amcrest Cameras and NVR Stack-based Buffer Overflow Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.356430000000; percentile 0.982800000000

Applicability

Cited product scope

Trace impact →
n/aAmcrest
[{"status": "affected", "version": "before 2.623.00AC004.0.R.200316, 2.420.AC00.18.R.20200217, 2.800.00AC000.0.R.200330, 2.800.0000000.6.R.200314.bin, 2.622.00AC000.0.R.200320.bin, and 4.000.00AC000.0.R.200218"}]unknown
Unknown vendorUnknown product
cpe:2.3:h:amcrest:1080-lite_8ch:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:amdv10814-h5:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip2m-841:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip2m-841-v3:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip2m-853ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip2m-858w:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip2m-866ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip2m-866w:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip4m-1053ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-2454ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-2493eb:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-2496eb:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-2597e:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-mb2546ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-mt2544ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ip8m-t2499ew:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ipm-721:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:amcrest:ipm-hx1:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:amcrest:1080-lite_8ch_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:amdv10814-h5_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip2m-841_firmware:*:*:*:*:*:*:*:*; end excluding v2.420.ac00.18.r.20200217supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip2m-841-v3_firmware:*:*:*:*:*:*:*:*; end excluding v2.800.0000000.6.r.200314supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip2m-853ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.623.00ac004.0.r.200316supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip2m-858w_firmware:*:*:*:*:*:*:*:*; end excluding v2.623.00ac004.0.r.200316supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip2m-866ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.623.00ac004.0.r.200316supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip2m-866w_firmware:*:*:*:*:*:*:*:*; end excluding v2.623.00ac004.0.r.200316supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip4m-1053ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.623.00ac004.0.r.200316supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-2454ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.622.00ac000.0.r.200320supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-2493eb_firmware:*:*:*:*:*:*:*:*; end excluding v2.622.00ac000.0.r.200320supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-2496eb_firmware:*:*:*:*:*:*:*:*; end excluding v2.622.00ac000.0.r.200320supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-2597e_firmware:*:*:*:*:*:*:*:*; end excluding v2.800.00ac000.0.r.200330supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-mb2546ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.622.00ac000.0.r.200320supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-mt2544ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.622.00ac000.0.r.200320supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ip8m-t2499ew_firmware:*:*:*:*:*:*:*:*; end excluding v2.622.00ac000.0.r.200320supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ipm-721_firmware:*:*:*:*:*:*:*:*; end excluding v2.420.ac00.18.r.20200217supported
Unknown vendorUnknown product
cpe:2.3:o:amcrest:ipm-hx1_firmware:*:*:*:*:*:*:*:*; end excluding v2.420.ac00.18.r.20200217supported

Assessments

CVSS by origin

8.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.0
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:S/C:P/I:P/A:C
8.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.