CVE-2025-58183Network attack vector

Service interruption via unbounded sparse-region allocation

Published Oct 29, 2025 · Updated Oct 29, 2025

Uncontrolled resource consumption in Go standard library archive/tar before 1.24.8 and 1.25.0 through 1.25.1 allows attackers to interrupt services. Reader.Next reaches readGNUSparseMap1x0, which accepts an unbounded count of GNU tar pax 1.0 sparse-region data blocks and accumulates them in memory. A user or application must process a crafted archive; compression amplifies a small input into allocations large enough to exhaust memory and disrupt the consuming process.

CVSS severity4.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Go standard library archive/tar before 1.24.8 and 1.25.0 through 1.25.1 allows attackers to interrupt services. Reader.Next reaches readGNUSparseMap1x0, which accepts an unbounded count of GNU tar pax 1.0 sparse-region data blocks and accumulates them in memory. A user or application must process a crafted archive; compression amplifies a small input into allocations large enough to exhaust memory and disrupt the consuming process.

The record

CVE
CVE-2025-58183
Published
Oct 29, 2025
Updated
Oct 29, 2025
Vendor
Go standard library
Product
archive/tar
Classifications
CWE-400, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <1.24.8
  2. Affected versionversion=1.25.0 <1.25.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · archive/tarversion=0 <1.24.8; version=1.25.0 <1.25.2

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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