CVE-2018-19935: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2018-19935 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 6.28% chance of exploitation in the next 30 days, higher than 93.5% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 6% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 07-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
6.28%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
No change 0.00 pp
From 6.28% 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.
Ubuntu3 products
- php-imap< 5.4.6-0ubuntu5.1
- php7.0< 7.0.33-0ubuntu0.16.04.1
- php7.2< 7.2.15-0ubuntu0.18.04.1
Alpine2 products
- php5< 5.6.39-r0
- php7< 7.1.29-r0
Debian1 product
- debian_linuxEOL8.0 | 9.0
Php1 product
- php≥ 5.6.0, < 5.6.39 | ≥ 7.0.0, < 7.0.33 | ≥ 7.1.0, < 7.1.26 | ≥ 7.2.0, < 7.2.14
4 vendors · 7 products
References
10 links
- lists.debian.org/debian-lts-announce/2018/12/msg00006.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory