CVE-2017-1000158: debian debian_linux Integer Overflow or Wraparound
Vulnerability summary
CVE-2017-1000158 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 7.94% chance of exploitation in the next 30 days, higher than 94.7% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 4Timeline
- 17-11-2017PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)
CVSS metrics
6 scores · 4 sources · 3 versions- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
7.94%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
No change 0.00 pp
From 7.94% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse9 products
- python-base&distro=SUSE Linux Enterprise Server 11 SP4< 2.6.9-40.3.1
- python-base&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 2.6.9-40.3.1
- python-base&distro=SUSE Linux Enterprise Software Development Kit 11 SP4< 2.6.9-40.3.1
- python-doc&distro=SUSE Linux Enterprise Server 11 SP4< 2.6-8.40.3.1
- python-doc&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 2.6-8.40.3.1
Mageia4 products
- python< 2.7.9-2.5.mga5
- python3< 3.4.3-1.6.mga5
- python< 2.7.13-1.1.mga6
- python3< 3.5.3-1.1.mga6
Debian3 products
- python2.6< 2.6.8-1.1+deb7u1
- python2.7< 2.7.13-4 | < 2.7.3-6+deb7u4
- debian_linuxEOL7.0 | 8.0 | 9.0
Ubuntu3 products
- python2.7< 2.7.6-8ubuntu0.4 | < 2.7.12-1ubuntu0~16.04.2
- python3.4< 3.4.3-1ubuntu1~14.04.6
- python3.5< 3.5.2-2ubuntu0~16.04.4~14.04.1 | < 3.5.2-2ubuntu0~16.04.4
Alpine2 products
- python≥ 3.4.0, < 2.7.14-r0
- python2< 2.7.14-r0
Python1 product
- python< 2.7.15 | ≥ 3.4.0, < 3.4.8 | ≥ 3.5.0, < 3.5.5
6 vendors · 22 products
