CVE-2025-54350
published 2025-08-03CVE-2025-54350: In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
PriorityP428medium5.3CVSS 3.1
AVNACLPRNUINSUCNINAL
EPSS
0.40%
31.9th percentile
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | iperf3 | < iperf3 3.12-1+deb12u2 (bookworm) | iperf3 3.12-1+deb12u2 (bookworm) |
| es | iperf3 | < 3.19.1 | 3.19.1 |
| es | iperf3 | >= 0 < 3.9-1+deb11u3 | 3.9-1+deb11u3 |
| es | iperf3 | >= 0 < 3.12-1+deb12u2 | 3.12-1+deb12u2 |
| es | iperf3 | >= 0 < 3.18-2+deb13u1 | 3.18-2+deb13u1 |
| es | iperf3 | >= 0 < 3.19.1-1 | 3.19.1-1 |
| es | iperf3 | >= 0 < 3.9-1+deb11u1ubuntu0.1 | 3.9-1+deb11u1ubuntu0.1 |
| es | iperf3 | >= 0 < 3.18-2ubuntu0.1 | 3.18-2ubuntu0.1 |
| es | iperf3 | >= 0 < 3.7-3ubuntu0.1~esm2 | 3.7-3ubuntu0.1~esm2 |
| es | iperf3 | >= 0 < 3.16-1ubuntu0.1~esm1 | 3.16-1ubuntu0.1~esm1 |
| es | iperf3 | >= 3.2 < 3.19.1 | 3.19.1 |
| msrc | azl3_iperf3_3.17.1-3_on_azure_linux_3.0 | — | — |
| msrc | cbl2_iperf3_3.18-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_iperf3_3.18-2_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
osv5.3MEDIUM
vendor_ubuntu5.3MEDIUM
vendor_debian3.7LOW
vendor_msrc3.7LOW
vendor_redhat3.7LOW
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OSV
iperf3 vulnerabilities
osv·2026-01-21·CVSS 5.3
CVE-2023-7250 [MEDIUM] iperf3 vulnerabilities
iperf3 vulnerabilities
Jorge Sancho Larraz discovered that iperf3 did not properly manage certain
inputs, which could cause the server process to stop responding, waiting
for input on the control connection. A remote attacker could possibly use
this issue to cause a denial of service. This issue was only addressed in
Ubuntu 22.04 LTS. (CVE-2023-7250)
It was discovered that iperf3 had a timing side-channel when performing RSA
decryption. An attacker could possibly use this issue to recover sensitive
information. This issue was only addressed in Ubuntu 20.04 LTS and Ubuntu
22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-26306)
It was discovered that iperf3 incorrectly handled certain inputs. An
attacker could possibly use this issue to cause a denial of service. This
issue was only addressed in
GHSA
GHSA-r6x8-74x9-5mc9: In iperf before 3
ghsa_unreviewed·2025-08-03
CVE-2025-54350 [LOW] CWE-617 GHSA-r6x8-74x9-5mc9: In iperf before 3
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
OSV
CVE-2025-54350: In iperf before 3
osv·2025-08-03·CVSS 5.3
CVE-2025-54350 [MEDIUM] CVE-2025-54350: In iperf before 3
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
Ubuntu
iperf3 vulnerabilities
vendor_ubuntu·2026-01-21·CVSS 5.3
CVE-2024-26306 [MEDIUM] iperf3 vulnerabilities
Title: iperf3 vulnerabilities
Summary: Several security issues were fixed in iperf3.
Jorge Sancho Larraz discovered that iperf3 did not properly manage certain
inputs, which could cause the server process to stop responding, waiting
for input on the control connection. A remote attacker could possibly use
this issue to cause a denial of service. This issue was only addressed in
Ubuntu 22.04 LTS. (CVE-2023-7250)
It was discovered that iperf3 had a timing side-channel when performing RSA
decryption. An attacker could possibly use this issue to recover sensitive
information. This issue was only addressed in Ubuntu 20.04 LTS and Ubuntu
22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-26306)
It was discovered that iperf3 incorrectly handled certain inputs. An
attacker could possibly use this issue
Microsoft
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
vendor_msrc·2025-08-12·CVSS 3.7
CVE-2025-54350 [LOW] CWE-617 In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
mitre: mitre
Customer A
Red Hat
iperf3: iperf Authentication Decode Failure
vendor_redhat·2025-08-03·CVSS 3.7
CVE-2025-54350 [LOW] CWE-617 iperf3: iperf Authentication Decode Failure
iperf3: iperf Authentication Decode Failure
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
A flaw was found in iperf3. A malformed Base64-encoded authentication string triggers an assertion failure within the `iperf_auth.c` file, leading to application termination. This vulnerability allows a network attacker to induce this failure by sending a crafted authentication attempt, resulting in an application-level denial of service condition.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Package: iperf3 (Re
Debian
CVE-2025-54350: iperf3 - In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and ap...
vendor_debian·2025·CVSS 3.7
CVE-2025-54350 [LOW] CVE-2025-54350: iperf3 - In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and ap...
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
Scope: local
bookworm: resolved (fixed in 3.12-1+deb12u2)
bullseye: resolved (fixed in 3.9-1+deb11u3)
forky: resolved (fixed in 3.19.1-1)
sid: resolved (fixed in 3.19.1-1)
trixie: resolved (fixed in 3.18-2+deb13u1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-54350 iperf3: iperf Authentication Decode Failure [fedora-42]
bugzilla·2025-08-04·CVSS 5.3
CVE-2025-54350 [MEDIUM] CVE-2025-54350 iperf3: iperf Authentication Decode Failure [fedora-42]
CVE-2025-54350 iperf3: iperf Authentication Decode Failure [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from rele
Bugzilla
CVE-2025-54350 iperf3: iperf Authentication Decode Failure
bugzilla·2025-08-03·CVSS 5.3
CVE-2025-54350 [MEDIUM] CVE-2025-54350 iperf3: iperf Authentication Decode Failure
CVE-2025-54350 iperf3: iperf Authentication Decode Failure
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
2025-08-03
Published