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CVE-2021-45848

25
FAUCET Score

CVE-2021-45848 is a Denial of Service (DoS) vulnerability affecting Nicotine+ versions 3.0.3 and later, including Fedora distributions. An unauthenticated attacker can crash Nicotine+ by sending a malformed file download request containing a null character in the file path. Rated 7.5 HIGH on CVSS, this vulnerability has a low attack complexity and requires no user interaction, leading to a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.3, < 3.2.1CPE matchmatch criteria
cpe:2.3:a:nicotine-plus:nicotine\+:*:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 55th 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

No media coverage found for this CVE.

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 (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: nicotine-plusFixed in: 3.2.1

Vendor Advisories (1)

pipGHSA-p4v2-r99v-wjc2high

Nicotine+ DoS on Null Character in Download Request

Mar 16, 2022

References

github.com / nicotine-plus/nicotine-plus/issues/1777
ExploitIssue TrackingPatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HWYV53KERFH2EC4XI2IVVQFTV75E5XM6
security.gentoo.org / glsa/202210-20
Third Party Advisory