CVE-2025-0167Public exploitNetwork attack vector

Password disclosure via empty netrc default match

Published Feb 5, 2025 · Updated Mar 7, 2025

Credential exposure in curl 7.76.0 through 8.11.1 allows remote attackers to obtain a prior host's password through an HTTP redirect. The lib/netrc.c parser treats an empty default entry as a successful match, so redirect handling reuses the first host's previously selected password for the next host. Exposure requires netrc credential use, redirect following, and a default entry with neither login nor password; only the password is disclosed to the followed-to host.

CVSS severity3.1
Low
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Credential exposure in curl 7.76.0 through 8.11.1 allows remote attackers to obtain a prior host's password through an HTTP redirect. The lib/netrc.c parser treats an empty default entry as a successful match, so redirect handling reuses the first host's previously selected password for the next host. Exposure requires netrc credential use, redirect following, and a default entry with neither login nor password; only the password is disclosed to the followed-to host.

The record

CVE
CVE-2025-0167
Published
Feb 5, 2025
Updated
Mar 7, 2025
Vendor
curl
Product
curl
Classifications
CWE-200, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.76.0 <=7.76.0
  2. Affected versionversion=7.76.1 <=7.76.1
  3. Affected versionversion=7.77.0 <=7.77.0
  4. Affected versionversion=7.78.0 <=7.78.0
  5. Affected versionversion=7.79.0 <=7.79.0
  6. Affected versionversion=7.79.1 <=7.79.1
  7. Affected versionversion=7.80.0 <=7.80.0
  8. Affected versionversion=7.81.0 <=7.81.0
  9. Affected versionversion=7.82.0 <=7.82.0
  10. Affected versionversion=7.83.0 <=7.83.0
  11. Affected versionversion=7.83.1 <=7.83.1
  12. Affected versionversion=7.84.0 <=7.84.0
  13. Affected versionversion=7.85.0 <=7.85.0
  14. Affected versionversion=7.86.0 <=7.86.0
  15. Affected versionversion=7.87.0 <=7.87.0
  16. Affected versionversion=7.88.0 <=7.88.0
  17. Affected versionversion=7.88.1 <=7.88.1
  18. Affected versionversion=8.0.0 <=8.0.0
  19. Affected versionversion=8.0.1 <=8.0.1
  20. Affected versionversion=8.10.0 <=8.10.0
  21. Affected versionversion=8.10.1 <=8.10.1
  22. Affected versionversion=8.1.0 <=8.1.0
  23. Affected versionversion=8.11.0 <=8.11.0
  24. Affected versionversion=8.11.1 <=8.11.1
  25. Affected versionversion=8.1.1 <=8.1.1
  26. Affected versionversion=8.1.2 <=8.1.2
  27. Affected versionversion=8.2.0 <=8.2.0
  28. Affected versionversion=8.2.1 <=8.2.1
  29. Affected versionversion=8.3.0 <=8.3.0
  30. Affected versionversion=8.4.0 <=8.4.0
  31. Affected versionversion=8.5.0 <=8.5.0
  32. Affected versionversion=8.6.0 <=8.6.0
  33. Affected versionversion=8.7.0 <=8.7.0
  34. Affected versionversion=8.7.1 <=8.7.1
  35. Affected versionversion=8.8.0 <=8.8.0
  36. Affected versionversion=8.9.0 <=8.9.0
  37. Affected versionversion=8.9.1 <=8.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

curl · curlversion=7.76.0 <=7.76.0; version=7.76.1 <=7.76.1; version=7.77.0 <=7.77.0; version=7.78.0 <=7.78.0; version=7.79.0 <=7.79.0; version=7.79.1 <=7.79.1; version=7.80.0 <=7.80.0; version=7.81.0 <=7.81.0; version=7.82.0 <=7.82.0; version=7.83.0 <=7.83.0; version=7.83.1 <=7.83.1; version=7.84.0 <=7.84.0; version=7.85.0 <=7.85.0; version=7.86.0 <=7.86.0; version=7.87.0 <=7.87.0; version=7.88.0 <=7.88.0; version=7.88.1 <=7.88.1; version=8.0.0 <=8.0.0; version=8.0.1 <=8.0.1; version=8.10.0 <=8.10.0; version=8.10.1 <=8.10.1; version=8.1.0 <=8.1.0; version=8.11.0 <=8.11.0; version=8.11.1 <=8.11.1; version=8.1.1 <=8.1.1; version=8.1.2 <=8.1.2; version=8.2.0 <=8.2.0; version=8.2.1 <=8.2.1; version=8.3.0 <=8.3.0; version=8.4.0 <=8.4.0; version=8.5.0 <=8.5.0; version=8.6.0 <=8.6.0; version=8.7.0 <=8.7.0; version=8.7.1 <=8.7.1; version=8.8.0 <=8.8.0; version=8.9.0 <=8.9.0; version=8.9.1 <=8.9.1

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo