PatchTheCVECVE-2017-17848: An issue was discovered in Enigmail before 1.9.9
CVE-2017-17848 is a high-severity flaw (CVSS 7.5) affecting enigmail, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in Enigmail before 1.9.9. In a variant of CVE-2017-17847, signature spoofing is possible for multipart/related messages because a signed message part can be referenced with a cid: URI but not actually displayed. In other words, the entire containing message appears to be signed, but the recipient does not see any of the signed text.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.8% (top 21%) |
| CISA exploited list | No |
| Weakness | CWE-347 |
| Published | 2017-12-27 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2017-17848?
enigmail: upgrade to 1.9.9; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2017-17848 being exploited?
CVE-2017-17848 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2017-17848 affect?
CVE-2017-17848 affects enigmail, debian linux. Severity is high (CVSS 7.5). An issue was discovered in Enigmail before 1.9.9. In a variant of CVE-2017-17847, signature spoofing is possible for multipart/related messages because a signed message part can be referenced with a cid: URI but not actually displayed. In o
How urgent is CVE-2017-17848?
Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist
Software pages
Related CVEs
- CVE-2019-14664 MEDIUM 6.5 UPGRADE MITIGATE In Enigmail below 2.1, an attacker in possession of PGP encrypted emails can wrap them as sub-parts within a c
- CVE-2019-12269 HIGH 7.5 UPGRADE Enigmail before 2.0.11 allows PGP signature spoofing: for an inline PGP message, an attacker can cause the pro
- CVE-2018-15586 MEDIUM 6.5 UPGRADE Enigmail before 2.0.6 is prone to to OpenPGP signatures being spoofed for arbitrary messages using a PGP/INLIN
- CVE-2018-12019 HIGH 7.5 UPGRADE The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and
- CVE-2017-17847 HIGH 7.5 UPGRADE MITIGATE An issue was discovered in Enigmail before 1.9.9