CVE-2025-2886: amazon tough
Vulnerability summary
CVE-2025-2886 is a medium (CVSS 5.7) vulnerability in amazon tough. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.1% of scored vulnerabilities.
Timeline
- 27-03-2025PublishedVulnerability first disclosed.
- 14-10-2025Last modifiedVulnerability information updated.
Description
Missing validation of terminating delegation causes the client to continue searching the defined delegation list, even after searching a terminating delegation. This could cause the client to fetch a target from an incorrect source, altering the target contents. Users should upgrade to tough version 0.20.0 or later and ensure any forked or derivative code is patched to incorporate the new fixes.
CVSS metrics
5 scores · 3 sources · 2 versions- OSV · Crates.ioEcosystem advisory · calculated5.7MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- NVDNIST5.7MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVDNIST4.5MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:NDiffers
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
+0.01 pp
From 0.32% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
3 vendors · 3 products
References
7 links- aws.amazon.com/security/security-bulletins/AWS-2025-007/Vendor Advisory
- github.com/awslabs/toughPACKAGE