CVE-2025-57784: Tomahawk auth timing attack due to usage of `strcmp` has been identified in Hiawatha webserver version 11.7 wh

Routine

LOW 3.3DOWNGRADE

CVE-2025-57784 is a low-severity flaw (CVSS 3.3) affecting hiawatha. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tomahawk auth timing attack due to usage of `strcmp` has been identified in Hiawatha webserver version 11.7 which allows a local attacker to access the management client.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Published	2026-01-26
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: hiawatha-webserver

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-26 18:16 UTCPublished CVE record published
2026-06-17 09:43 UTCUpdated Record last modified

hiawatha-webserver hiawatha DOWNGRADE

Affected: 11.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.7

1. Check installed version

apt-cache policy hiawatha || rpm -q hiawatha || hiawatha --version

2. No fixed release: DOWNGRADE to a release before 11.7 (Debian / Ubuntu)

apt-cache madison hiawatha sudo apt install hiawatha=<VERSION_BEFORE_11.7> sudo apt-mark hold hiawatha

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list hiawatha sudo dnf downgrade hiawatha-<VERSION_BEFORE_11.7> sudo dnf versionlock add hiawatha

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-57784?

hiawatha: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-57784 being exploited?

CVE-2025-57784 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-57784 affect?

CVE-2025-57784 affects hiawatha. Severity is low (CVSS 3.3). Tomahawk auth timing attack due to usage of `strcmp` has been identified in Hiawatha webserver version 11.7 which allows a local attacker to access the management client.

How urgent is CVE-2025-57784?

Priority 13/100. No elevated risk signals yet.

Related CVEs

CVE-2025-57783 MEDIUM 5.3 DOWNGRADE Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 w

References

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