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TI-2026-04555 Aliases CVE-2026-5213GHSA-rgch-x4h6-m876

D-Link DNS-1550-04 account_mgr.cgi cgi_adduser_to_session stack-based overflow

Priority HIGH 73CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The affected element is the function cgi_adduser_to_session of the file /cgi-bin/account_mgr.cgi. This manipulation of the argument read_list causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00727 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
D-LinkDNS-12020260205—No fix listedCNA
D-LinkDNR-202L20260205—No fix listedCNA
D-LinkDNS-315L20260205—No fix listedCNA
D-LinkDNS-32020260205—No fix listedCNA
D-LinkDNS-320L20260205—No fix listedCNA
D-LinkDNS-320LW20260205—No fix listedCNA
D-LinkDNS-32120260205—No fix listedCNA
D-LinkDNR-322L20260205—No fix listedCNA
D-LinkDNS-32320260205—No fix listedCNA
D-LinkDNS-32520260205—No fix listedCNA
D-LinkDNS-32620260205—No fix listedCNA
D-LinkDNS-327L20260205—No fix listedCNA
D-LinkDNR-32620260205—No fix listedCNA
D-LinkDNS-340L20260205—No fix listedCNA
D-LinkDNS-34320260205—No fix listedCNA
D-LinkDNS-34520260205—No fix listedCNA
D-LinkDNS-726-420260205—No fix listedCNA
D-LinkDNS-1100-420260205—No fix listedCNA
D-LinkDNS-1200-0520260205—No fix listedCNA
D-LinkDNS-1550-0420260205—No fix listedCNA
  • DNS-120 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNR-202L VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-315L VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-320 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-320L VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-320LW VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-321 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNR-322L VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-323 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-325 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-326 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-327L VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNR-326 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-340L VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-343 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-345 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-726-4 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-1100-4 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-1200-05 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA
  • DNS-1550-04 VendorD-Link Affected 20260205 Fixed in — No fix listed CNA

CPE configurations NVD · 40

CPEVersionsRoleVendor
cpe:2.3:o:dlink:dnr-202l_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dnr-202l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dnr-326_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dnr-326:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-1100-4_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-1100-4:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-120_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-120:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-1200-05_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-1200-05:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dnr-202l_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dnr-202l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dnr-326_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dnr-326:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-1100-4_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-1100-4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-120_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-120:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-1200-05_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-1200-05:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Show 30 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:dlink:dns-1550-04_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-1550-04:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-315l_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-315l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-320_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-320:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-320l_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-320l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-320lw_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-320lw:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-321_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-321:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-322l_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-322l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-323_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-323:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-325_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-325:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-326_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-326:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-327l_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-327l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-340l_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-340l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-343_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-343:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-345_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-345:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dns-726-4_firmware:*:*:*:*:*:*:*:*up to 2026-02-05VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dns-726-4:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-1550-04_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-1550-04:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-315l_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-315l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-320_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-320:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-320l_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-320l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-320lw_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-320lw:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-321_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-321:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-322l_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-322l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-323_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-323:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-325_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-325:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-326_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-326:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-327l_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-327l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-340l_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-340l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-343_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-343:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-345_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-345:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dns-726-4_firmware:*:*:*:*:*:*:*:* Versions up to 2026-02-05 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dns-726-4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5213
  2. 2026-10-03 Alias added: GHSA-rgch-x4h6-m876

References

Exploit 1

Other 1

  • TI-2024-03070 D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi command injection KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-03069 D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-00708 D-Link DIR-859 HTTP POST Request hedwig.cgi path traversal KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-10693 OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-17249 D-Link Go-RT-AC750 GORTAC750_revA_v101b03 and GO-RT-AC750_revB_FWv200b02 are vulnerable… KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09657 D-Link DIR-820L 1.05B03 was discovered to contain remote command execution (RCE)… KEVCVSS 3.1CRITICAL 9.8
See all 979 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences