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CVE-2026-25541

26
FAUCET Score

CVE-2026-25541 is a high-severity

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.2.1, < 1.11.1CPE matchmatch criteria
cpe:2.3:a:tokio-rs:bytes:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 4.0

5.5MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 20th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia msrc
Product: azl3 rust-afterburn 5.8.2-1 on Azure Linux 3.0Fixed in: 5.8.2-2
microsoftpatch availablevia msrc
Product: azl3 trident 0.21.0-1 on Azure Linux 3.0Fixed in: 0.22.0-1
microsoftpatch availablevia msrc
Product: azl3 rust-afterburn 5.8.2-2 on Azure Linux 3.0Fixed in: 5.8.2-2
microsoftpatch availablevia msrc
Product: 21401-17084Fixed in: 5.8.2-2
microsoftpatch availablevia msrc
Product: 21291-17084Fixed in: 5.8.2-2
microsoftpatch availablevia msrc
Product: 20955-17084Fixed in: 0.22.0-1
rustpatch availablevia ghsa
Product: bytesFixed in: 1.11.1

Vendor Advisories (2)

microsoft2026-Feb/CVE-2026-25541Moderate

Bytes is vulnerable to integer overflow in BytesMut::reserve

Feb 10, 2026
rustGHSA-434x-w66g-qw3rmedium

bytes has integer overflow in BytesMut::reserve

Feb 3, 2026

References

github.com / tokio-rs/bytes/commit/d0293b0e35838123c51ca5dfdf468ecafee4398f
Patch
github.com / tokio-rs/bytes/releases/tag/v1.11.1
ProductRelease Notes
github.com / tokio-rs/bytes/security/advisories/GHSA-434x-w66g-qw3r
ExploitVendor Advisory
rustsec.org / advisories/RUSTSEC-2026-0007.html
ExploitThird Party Advisory