CVE-2015-1283

MEDIUMEPSS 97th pctl

6.8

CVSS v2

Description

Multiple integer overflows in the XML_GetBuffer function in Expat through 2.1.0, as used in Google Chrome before 44.0.2403.89 and other products, allow remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted XML data, a related issue to CVE-2015-2716.

CWE-190Integer Overflow

How to fix

Remediation Available

expatDebian

Fixed in:2.1.0-7CVE-2015-1283

expatUbuntu

Fixed in:2.1.0-4ubuntu1.1USN-2726-1

This Ubuntu release reached end-of-life on 2019-04-02.

lib64expat1Ubuntu

Fixed in:2.1.0-4ubuntu1.1USN-2726-1

This Ubuntu release reached end-of-life on 2019-04-02.

libexpat1Ubuntu

Fixed in:2.1.0-4ubuntu1.1USN-2726-1

This Ubuntu release reached end-of-life on 2019-04-02.

liboxideqtcore0Ubuntu

Fixed in:1.8.4-0ubuntu0.14.04.2USN-2677-1

This Ubuntu release reached end-of-life on 2019-04-02.

libxmltokUbuntu

Fixed in:1.2-3ubuntu0.16.04.1~esm2USN-5455-1

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:1.2-4ubuntu0.18.04.1~esm4USN-7199-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.2-4ubuntu0.18.04.1~esm1USN-5455-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.2-4ubuntu0.20.04.1~esm4USN-7199-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.2-4ubuntu0.20.04.1~esm1USN-5455-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.2-4ubuntu0.22.04.1~esm1USN-5455-1

Fixed in:1.2-4ubuntu0.22.04.1~esm4USN-7199-1

Fixed in:1.2-4.1ubuntu2.24.0.4.1+esm2USN-7199-1

libxmltok1Ubuntu

Fixed in:1.2-3ubuntu0.16.04.1~esm2USN-5455-1

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:1.2-4ubuntu0.18.04.1~esm4USN-7199-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.2-4ubuntu0.18.04.1~esm1USN-5455-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.2-4ubuntu0.20.04.1~esm4USN-7199-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.2-4ubuntu0.20.04.1~esm1USN-5455-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

Fixed in:1.2-4ubuntu0.22.04.1~esm1USN-5455-1

Fixed in:1.2-4ubuntu0.22.04.1~esm4USN-7199-1

libxmltok1t64Ubuntu

Fixed in:1.2-4.1ubuntu2.24.0.4.1+esm2USN-7199-1

oxide-qtUbuntu

Fixed in:1.8.4-0ubuntu0.14.04.2USN-2677-1

This Ubuntu release reached end-of-life on 2019-04-02.

vnc4Ubuntu

Fixed in:4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1USN-4772-1

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1USN-4772-1

This Ubuntu release reached end-of-life on 2021-04-02.

vnc4serverUbuntu

Fixed in:4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1USN-4772-1

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1USN-4772-1

This Ubuntu release reached end-of-life on 2021-04-02.

xvnc4viewerUbuntu

Fixed in:4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1USN-4772-1

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1USN-4772-1

This Ubuntu release reached end-of-life on 2021-04-02.

Python 2Windows application

Affected:3.5.0 3.5.2Fixed in:3.5.2Python Software Foundation

Affected:3.4.0 3.4.5Fixed in:3.4.5Python Software Foundation

Affected:2.7.0 2.7.12Fixed in:2.7.12Python Software Foundation

Affected:3.3.0 3.3.7Fixed in:3.3.7Python Software Foundation

Python 3.10Windows application

Affected:3.4.0 3.4.5Fixed in:3.4.5Python Software Foundation

Affected:3.3.0 3.3.7Fixed in:3.3.7Python Software Foundation

Affected:3.5.0 3.5.2Fixed in:3.5.2Python Software Foundation

Affected:2.7.0 2.7.12Fixed in:2.7.12Python Software Foundation

Python 3.11Windows application

Affected:3.4.0 3.4.5Fixed in:3.4.5Python Software Foundation

Affected:3.5.0 3.5.2Fixed in:3.5.2Python Software Foundation

Affected:3.3.0 3.3.7Fixed in:3.3.7Python Software Foundation

Affected:2.7.0 2.7.12Fixed in:2.7.12Python Software Foundation

Python 3.12Windows application

Affected:3.4.0 3.4.5Fixed in:3.4.5Python Software Foundation

Affected:2.7.0 2.7.12Fixed in:2.7.12Python Software Foundation

Affected:3.3.0 3.3.7Fixed in:3.3.7Python Software Foundation

Affected:3.5.0 3.5.2Fixed in:3.5.2Python Software Foundation

Python 3.8Windows application

Affected:3.5.0 3.5.2Fixed in:3.5.2Python Software Foundation

Affected:3.4.0 3.4.5Fixed in:3.4.5Python Software Foundation

Affected:3.3.0 3.3.7Fixed in:3.3.7Python Software Foundation

Affected:2.7.0 2.7.12Fixed in:2.7.12Python Software Foundation

Python 3.9Windows application

Affected:2.7.0 2.7.12Fixed in:2.7.12Python Software Foundation

Affected:3.4.0 3.4.5Fixed in:3.4.5Python Software Foundation

Affected:3.5.0 3.5.2Fixed in:3.5.2Python Software Foundation

Affected:3.3.0 3.3.7Fixed in:3.3.7Python Software Foundation

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

18.44%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	91%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

Common questions

How do I fix CVE-2015-1283?

Published advisories record a fix for 18 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2015-1283 being actively exploited?

Not that we know of. CVE-2015-1283 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 18.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 97% of all scored CVEs.

How severe is CVE-2015-1283?

CVE-2015-1283 has a CVSS v2 base score of 6.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2015-1283 affect?

Published advisories record a fix for expat (Debian), expat (Ubuntu), lib64expat1 (Ubuntu), libexpat1 (Ubuntu), and 14 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.