CVE-2019-25049

Memory disclosure and crash via ASN.1 printing

Published Jul 1, 2021 · Updated Aug 5, 2024

Out-of-bounds read in LibreSSL 2.9.1 through 3.2.1 allows attackers to expose memory or crash a process during ASN.1 printing. Recursive calls between asn1_item_print_ctx and asn1_template_print_ctx read beyond the bounds of an ASN.1 value while rendering it. Public sources do not identify the defective template field; triggering the flaw requires an application to print attacker-influenced ASN.1 data.

CVSS severity7.1
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in LibreSSL 2.9.1 through 3.2.1 allows attackers to expose memory or crash a process during ASN.1 printing. Recursive calls between asn1_item_print_ctx and asn1_template_print_ctx read beyond the bounds of an ASN.1 value while rendering it. Public sources do not identify the defective template field; triggering the flaw requires an application to print attacker-influenced ASN.1 data.

The record

CVE
CVE-2019-25049
Published
Jul 1, 2021
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:P
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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