CVE-2016-7167: fedoraproject fedora Integer Overflow or Wraparound
Vulnerability summary
CVE-2016-7167 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in fedoraproject fedora. EPSS estimates a 11.74% chance of exploitation in the next 30 days, higher than 96% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 12% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 07-10-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Multiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl before 7.50.3 allow attackers to have unspecified impact via a string of length 0xffffffff, which triggers a heap-based buffer overflow.
CVSS metrics
6 scores · 5 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · Red hatEcosystem advisory · calculated2.9LowCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
11.74%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
No change 0.00 pp
From 11.74% 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.
Redhat4 products
- curl< 0:7.29.0-42.el7
- curl-debuginfo< 0:7.29.0-42.el7
- libcurl< 0:7.29.0-42.el7
- libcurl-devel< 0:7.29.0-42.el7
Alpine1 product
- curl< 7.50.3-r0 | < 7.50.3 | < 7.49.1-r3 | < 7.50.3-r1
Debian1 product
- curl< 7.51.0-1 | < 7.26.0-1+wheezy16
Fedoraproject1 product
- fedoraEOL23 | 24 | 25
Haxx1 product
- libcurl≤ 7.50.2
Mageia1 product
- curl< 7.40.0-3.5.mga5
Ubuntu1 product
- curl< 7.35.0-1ubuntu2.10 | < 7.47.0-1ubuntu2.2
7 vendors · 10 products
References
32 links- www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.538632Vendor AdvisoryX Refsource SLACKWAREThird Party Advisory
- www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlX Refsource CONFIRM
