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TI-2025-34173 Aliases CVE-2025-54351GHSA-xjwm-4pfw-49g2

In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).

Priority MEDIUM 43CWE-420Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00468 40th percentileScored 2026-11-07
Fix Fixed iperf3 (ES): 3.19.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
ESiperf3before 3.19.13.19.1Patch availableCNA
  • iperf3 VendorES Affected before 3.19.1 Fixed in 3.19.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:es:iperf3:3.19:*:*:*:*:*:*:*3.19VulnerableES
  • cpe:2.3:a:es:iperf3:3.19:*:*:*:*:*:*:* Versions 3.19 Vulnerable ·ES

Remediation

  • Fix · CNA iperf3 (ES) Fixed in 3.19.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    ES iperf3 3.19.1

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2025-34171 In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.Priority MEDIUM 43
    • TI-2025-34172 Reachable assertion in ES iperf3Priority LOW 25
    Show all 3 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-54351
  2. 2026-10-03 Alias added: GHSA-xjwm-4pfw-49g2

References

Patch 1

Other 1

  • TI-2024-35847 iperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function. CVSS 3.1HIGH 7.5
  • TI-2016-03690 The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings… CVSS 3.1CRITICAL 9.8
  • TI-2025-34171 In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow. CVSS 3.1CRITICAL 10.0
  • TI-2023-19787 iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field. CVSS 3.1HIGH 7.5
  • TI-2024-17387 iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA… CVSS 3.1MEDIUM 5.9
  • TI-2023-06634 Iperf3: possible denial of service CVSS 3.1MEDIUM 5.3
See all 7 →

Sources

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