CVE-2020-25574

Exp

An issue was discovered in the http crate before 0.1.20 for Rust. An integer overflow in HeaderMap::reserve() could result in denial of service (e.g., an infinite loop).

Published: 2020-09-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-25574 is rated High Exploit Risk (74.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.81%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-25574

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-25574

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 1.56% 1.81% +0.26%
2 2025-11-18 1.81% 1.56% -0.26%
3 2025-09-10 — 1.81% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-25574

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-25574

GitHub Security Advisory for CVE-2020-25574

GHSA-x7vr-c387-8w57 · Severity: high · Ecosystem: rust — Integer Overflow/Infinite Loop in the http crate

OS Trackers for CVE-2020-25574

vendor priority summary link
debian low CVE-2020-25574 low priority: Debian including 1 source packages (rust-http), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2020-25574
suse medium CVE-2020-25574 severity moderate: SUSE including 40 source package names (cargo, cargo1.43, …), 153 product×package rows across 22 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (22 product lines)): Known Not Affected 153. https://www.suse.com/security/cve/CVE-2020-25574/
ubuntu low CVE-2020-25574 low priority: Ubuntu including 1 source packages (rust-http), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 8, DNE 4, needs-triage 4. https://ubuntu.com/security/CVE-2020-25574

Affected software / configurations for CVE-2020-25574

Vendor Product Version Raw CPE
hyper http < 0.1.20 cpe:2.3:a:hyper:http:*:*:*:*:*:*:*:*

References for CVE-2020-25574

cvelogic Threat Intelligence