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CVE-2021-21729· NVD / CVE Program· CNA zte

Some ZTE products have CSRF vulnerability.

Some ZTE products have CSRF vulnerability. Because some pages lack CSRF random value verification, attackers could perform illegal authorization operations by constructing messages.This affects: ZXHN H168N V3.5.0_EG1T5_TE, V2.5.5, ZXHN H108N V2.5.5_BTMT1

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Apr 13, 2021
Updated
Jun 16, 2026
EPSS
0.4% · 30th percentile
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Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
ztezxhn h168n firmware
ztezxhn h168n
ztezxhn h108n firmware
ztezxhn h108n

Affected versions

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

  • zte zxhn h108n firmware2.5.5_btmt1
  • zte zxhn h168n firmware3.5.0_eg1t5_te

Versions reported by the vendor

Affected version ranges reported by the assigning authority (zte). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a ZXHN H168N,ZXHN H108N

    • V3.5.0_EG1T5_TE, V2.5.5_BTMT1affected

Same product

zte: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-7358ZTE ZXHN H168N product with versions V2.2.0_PK1.2T5, V2.2.0_PK1.2T2, V2.2.0_PK11T7 and V2.2.0_PK11T have an improper change control vulnerab
    62This week
  • CVE-2018-7357ZTE ZXHN H168N product with versions V2.2.0_PK1.2T5, V2.2.0_PK1.2T2, V2.2.0_PK11T7 and V2.2.0_PK11T have an improper access control vulnerab
    61This week
  • CVE-2021-21730A ZTE product is impacted by improper access control vulnerability.
    39Monitor
  • CVE-2021-21735A ZTE product has an information leak vulnerability.
    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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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.

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